Blake Lively is mermaid-chic in a teal dress while Gabrielle Union has legs for days as they lead the stars at launch of Pharrell Williams’ Tiffany Titan jewelry line

Blake Lively and Gabrielle Union showed off contrasting elegant looks as they arrived at the all-star launch of Pharrell Williams‘ new Tiffany & Co. jewelry line, Tiffany Titan, in New York City on Thursday.

The 36-year-old Gossip Girl star glowed in a teal dress that made her look like a mermaid venturing onto land thanks to its scale-like texture, while the 51-year-old Bring It On actress put her long, toned legs on display with a barely there black mini skirt.

The leading ladies were joined by other stars, including The Bear’s Ayo Edebiri, Rosalía, A$AP Rocky and Anitta, as well as the man of the hour, Pharrell.

The event, which was held at the Tiffany & Co. Landmark store, appeared to eschew a traditional red carpet, but that didn’t stop the guests from looking glamorous.

Blake — who was recently announced to return for a sequel to her crime comedy hit A Simple Favor — arrived at the launch in a gorgeous sleeveless teal dress that hugged her curves and emphasized her hourglass figure.

Blake Lively and Gabrielle Union showed off contrasting elegant looks as they arrived at the all-star launch of Pharrell Williams’ new Tiffany & Co. jewelry line, Tiffany Titan, on Thursday. The stars arrived at the Tiffany & Co. Landmark store in New York City

The 36-year-old Gossip Girl star glowed in a teal dress that made her look like a mermaid venturing onto land thanks to its scale-like texture

The delicate item was decorated with sequins, rhinestones and tiny dangling pearls arranged in scale-like overlapping circles.

Blake’s dress featured thick shoulder straps and a long skirt that reached halfway down her knees and included a modest slit. 

The actress elevated her stature with a set of gleaming white open-toe heels with silver-studded straps, and she swept her long blond curls to the side and let them cascade down one shoulder. 

Fittingly for a Tiffany launch, Blake arrived covered in jewels, and she held her delicate hands in front of herself in an ostentatious manner so as to display them prominently.

She wore a slim diamond bracelet on one wrist, along with a more opulent strand with a gemstone that matched her dress and a diamond setting, along with a looser bracelet that allowed the stone to hand down over her hand.

The Savages actress also wore two enormous rings on her right ring finger, including one covered in stones and featuring what looked like a large yellow diamond in the center, while a second ring was decked out in white diamonds, though both rings were so enormous that they weren’t able to lie flush together on her finger.

The blond beauty also sparkled thanks to her diamond-encrusted dangling earrings.

She completed the luxurious display with a single more-modest ring on her left ring finger. 

The delicate item was decorated with sequins, rhinestones and tiny dangling pearls

The decorations were arranged in scale-like overlapping circles. Blake’s dress featured thick shoulder straps and a long skirt that reached halfway down her knees and included a modest slit

The actress elevated her stature with a set of gleaming white open-toe heels, and she swept her long blond curls to the side and let them cascade down one shoulder

Fittingly for a Tiffany launch, Blake arrived covered in jewels, and she held her delicate hands out in an ostentatious manner so as to display them prominently

She wore a slim diamond bracelet and a looser bracelet with a gemstone matching her dress that hung down over her hand. She sported two enormous diamond-covered rings on her right hand that were so big that they couldn’t lie flush together on her finger

She added dangling diamond-encrusted earrings to her outfit and sported a more modest single ring on her left hand

Gabrielle looked gorgeous in a long-sleeve black top with a plunging V-shaped neckline highlighting her cleavage.

She complemented it with a black miniskirt and a slim black leather belt, and the 5ft7in beauty stood tall in shiny black heels with pointy toes that strapped around her ankles. 

Gabrielle caught up with Emmy winner Ayo Edebiri, who stunned in a sleeveless black spaghetti-strap dress with black open-toe heels. 

Both women wore thick Tiffany chains around their throats, though they didn’t appear to be from the new collection.

Gabrielle wore her raven tresses styled in a chic blunt-cut bob with a side part, while Ayo had her dark hair styled in cornrows to put the spotlight on her impeccably made-up face. 

They were joined inside the launch by the singer–songwriter Maggie Rogers. 

She wore a lustrous back satin spaghetti-strap dress with a plunging neckline, and she styled her blond hair in short waves. 

The Spanish singer Rosalía was also dressed in all black. She wore an off-the-shoulder dress with a frilly neckline and a skirt that reached to the ground and featured a high slit. The stunning item was decorated with rows of tiny sparkling stones.

Gabrielle looked gorgeous in a long-sleeve black top with a plunging V-shaped neckline highlighting her cleavage. She complemented it with a black miniskirt, a slim black leather belt and pointy black heels

Gabrielle caught up with Emmy winner Ayo Edebiri, who stunned in a sleeveless black spaghetti-strap dress with black open-toe heels. Both women wore thick Tiffany chains around their throats, though they didn’t appear to be from the new collection

Ayo had her dark hair styled in cornrows to put the spotlight on her impeccably made-up face and mauve lip

Gabrielle wore her raven tresses styled in a chic blunt-cut bob with a side part. She and Ayo were joined inside the launch by Maggie Rogers

Maggie wore a lustrous back satin spaghetti-strap dress with a plunging neckline, and she styled her blond hair in short waves

Maggie’s dress featured a long, flowing skirt and a tall slit highlighting her trim legs

The Spanish singer Rosalía was also dressed in all black. She wore an off-the-shoulder dress with a frilly neckline and a skirt that reached to the ground and featured a high slit. The stunning item was decorated with rows of tiny sparkling stones

Georgia Fowler put on a leggy display and towered in open-toe heels with modest platform sole as she arrived.

She wore a striking plunging mini dress with bunched-up sleeves and large padded shoulders. The New Zealand–born model accessorized with a large black leather clutch. 

The singer–songwriter Arya Starr flashed the flesh in a black dress with large cutout highlighting her trim midriff, and it had a strap that wrapped around one of her thighs.

She wore long black gloves dotted with diamonds and, and she had a comical jeweled lobster brooch pinned over her nether regions.

Arya stood tall in green open-toe heels that twirled around her ankles and were decorated with dangling jewels, and she styled her jet-black tresses in lovely curls. 

A$AP Rocky arrived without his love Rihanna. He looked too cool for school in a double-breasted suit with pinstripes and peaked lapels. He covered up with gold-frame wraparound sunglasses. 

The singer Anitta departed from some of the other high-profile women by opting for pants over a dress. 

She wore a sleeveless black off-the-shoulder top with a rolled neckline highlighting her bust, and she paired it with baggy black slacks that her pointy-toed heels just barely peaked out from. 

She completed her look with a black leather handbag featuring a circular gold ring or a handle. 

She was seen cozying up with Pharrell Williams, who designed the newly launched Tiffany Titan collection. 

Georgia Fowler put on a leggy display and towered in open-toe heels with modest platform sole as she arrived. She wore a striking plunging mini dress with bunched-up sleeves and large padded shoulders

The New Zealand–born model accessorized with a large black leather clutch 

The singer–songwriter Arya Starr flashed the flesh in a black dress with large cutout highlighting her trim midriff, and it had a strap that wrapped around one of her thighs

She wore long black gloves dotted with diamonds and, and she had a comical jeweled lobster brooch pinned over her nether regions

She stood tall in green open-toe heels that twirled around her ankles and were decorated with dangling jewels, and she styled her jet-black tresses in lovely curls

A$AP Rocky arrived without his love Rihanna. He looked too cool for school in a double-breasted suit with pinstripes and peaked lapels. He covered up with gold-frame wraparound sunglasses

The singer Anitta departed from some of the other high-profile women by opting for pants over a dress

She wore a sleeveless black off-the-shoulder top with a rolled neckline highlighting her bust, and she paired it with baggy black slacks that her pointy-toed heels just barely peaked out from

She completed her look with a black leather handbag featuring a circular gold ring or a handle. She was seen cozying up with Pharrell Williams, who designed the newly launched Tiffany Titan collection

The iconic musician channeled classic ’70s style with a black leather biker jacket with dangling tassels. He paired it with flared jeans and chunky yellow sneakers, and he complemented the tassels with a large belt buckle and a cowboy hat for a cool Western look

Another hitmaker, the rapper Pusha T, also favored a black leather jacket. His was a simpler zip-up design, and he wore a classic white shirt and a slim black necktie underneath

Hacks star Hannah Einbinder departed from many of the all-black ensembles with a chic burgundy leather double-breasted dress with thick buttons running up her chest. She wore the long-sleeve look with classic black pumps, and she carried a rectangular Louis Vuitton handbag

The iconic record producer, singer and songwriter channeled classic 1970s style with a black leather biker jacket that was enlivened with dangling tassels. 

He paired it with flared jeans and chunky mustard-yellow sneakers, and he complemented the tassels with a large belt buckle and a cream-colored cowboy hat for a cool Western look.

Another hitmaker, the rapper Pusha T, also favored a black leather jacket.

His was a simpler zip-up design, and he wore a classic white shirt and a slim black necktie underneath.

He paired the jacket with black trousers and chunky black boots, and he covered his hair with a black durag while sporting diamond studs. 

Hacks star Hannah Einbinder departed from many of the all-black ensembles with a chic burgundy leather double-breasted dress with thick buttons running up her chest. 

She wore the long-sleeve look with classic black pumps, and she carried a rectangular Louis Vuitton handbag.

Law Roach, who announced he was retiring as a stylist last year, was as impeccably dressed as ever. 

He wore a glittering blue-and-white striped shirt half-tucked into white striped trousers, and he created a pleasing silhouette by layering them with a tasteful charcoal cashmere overcoat. 

Law Roach, who announced he was retiring as a stylist last year, was as impeccably dressed as ever. He wore a glittering blue-and-white striped shirt half-tucked into white striped trousers, and he created a pleasing silhouette by layering them with a tasteful charcoal cashmere overcoat

The Korean singer also chose a more colorful look with a pale pink satin off-the-shoulder mini dress, along with pumps in a matching shade

She wore her hair — which was dyed to match her outfit — tied back, and she sported a thick gold Tiffany chain around her throat

Law Roach looked over the moon as he caught up with Kehinde Wiley at the launch party

Blake Lively stopped to recognize the evening’s chef Daniel Boulud (2nd to right) along with his team members

Gabrielle Union and Ayo Edebiri locked hands as they chatted by the dining table

The comedian and newly in-demand actress shook hands with Rosé as they chatted with Rosalía

Pharrell had the guest-of-honor position at the candle-lit dining table, where he revealed his fun Mickey Mouse shirt, which celebrated the iconic cartoon as he looked in his 1928 debut. He was joined on the left by his wife Helen Lasichanh

The hitmaker sat opposite Tiffany & Co. Executive VP of Product and Communications Alexandre Arnault

Blake seemed to be having a great time during the as she sat down to chat with other guests

Gabrielle is seen deep in conversation. She was seated at Pharrell’s side

The two A-listers caught up during the dinner

Anitta wore her long dark locks spread out across her shoulders

Georgia had her dark locks styled in thick, undulating waves

Arya starr and Anitta were seen having a conversation during some downtime

He styled his long hair straight and parted down the middle, and he had on a pointy-toed set of glittering black Louboutins. 

Roach, who continues to collaborate with his friend Zendaya, accessorized with a seafoam-colored Hermès alligator Birkin bag.

The Korean singer also chose a more colorful look with a pale pink satin off-the-shoulder mini dress, along with pumps in a matching shade. 

She wore her hair — which was dyed to match her outfit — tied back, and she sported a thick gold Tiffany chain around her throat.