Hey, Upper East Siders! Did you spot this mother-daughter duo in NYC?

No, not Serena and Lily Van der Woodsen—Blake Lively and her mom Elaine Lively. The two attended the reopening of Tiffany & Co.'s flagship store in New York on April 27. 

For the event, Blake sported a brown vegan leather shirtdress by Brandon Maxwell along with matching heels, a gold snake necklace and coordinating bracelets. The actress also wore her hair down with curls for the evening. As for her mom, Elaine donned a blue blouse that was reminiscent of Tiffany & Co.'s iconic hue along with a black blazer, matching trousers and shoes. She finished off her look with a sparkly necklace and black belt. 

It was certainly a star-studded night as other guests included Hailey Bieber, Zoë Kravitz, Tracee Ellis Ross, Jacob Elordi, Anitta, Katy Perry, Mark Wahlberg and Jimin of BTS. Some attendees also turned the event into a date night as celebrity couples included Gabrielle Union and Dwyane Wade, Brooklyn Beckham and Nicola Peltz and Dylan Sprouse and Barbara Palvin.

But you don't need Gossip Girl to tell you that Blake has been seen on several New York City outings this month.

Just a few days ago, she attended Barnard College's Annual Gala and wore a silk organza trench by Sergio Hudson, a floral-print Carolina Herrera dress and bright Manolo Blahnik pumps, making it her first red-carpet appearance since welcoming baby no. 4 with Ryan Reynolds earlier this year. And last week, the A Simple Favor star—who is also mom to daughters James, 8; Inez, 6; and Betty, 3—enjoyed a city stroll with Taylor Swift, Gigi Hadid and HAIM sisters Alana Haim, Este Haim and Danielle Haim.

To see more of Blake's red-carpet and street style outfits from over the years, keep scrolling.

The actress debuts her baby bump at the Forbes Power Women's Summit in a glitzy gold dress from Valentino. The birth of Blake and Ryan's fourth child was revealed in February 2023.

The A Simple Favor star stepped out in a dazzling blue co-ord set to see the Michael Kors Fall/Winter 2022 show during New York Fashion Week.

While attending the Free Guy premiere with Ryan, Blake certainly stole the spotlight this sparkly pink cut out gown.

Blake brings a splash of color to The Adam Project premire.

Who says an LBD has to be boring? The star's cut-out look proves that the timeless design can be risqué.

The Gossip Girl alum turns the street into her own personal runway, as she turns heads in a vibrant orange power suit.

Blake proves why she's Met Gala royalty in this Versace Atelier masterpiece.

Blake takes NY by storm while attending a Met Gala after-party in this sexy red-beaded corset dress.

Her presence is a present! Blake stuns in a red mini dress that features a massive bow front detail and beaded appliqués.

Blake can't get enough of suits and she ups the ante with this all-black look, complete with a daring sheer top.

The actress is looking fierce in a suit, sunglasses, hat and boots. 

Blake looks rocks a floral-print suit with a violet coat as she walks into down the street in NYC.

The actress wears a menswear-inspired look to New York Fashion Week. She even added a top hat to complete the outfit.

The actress mixes it up with style, wearing two complementary, yet different patterns. The brooch on her collar, however, is the hero of this look.

Blake's fashion is a present to the style obsessed. Between the earrings, glitz, red ribbon and shoes, we're not sure which part of her ensemble is our favorite.

The star demonstrates how to wear menswear-inspired fashion on the streets of NYC.

Blake took the cake at the 2018 Met Gala. This Versace gown was made for the star's stunning figure, and the over-the-top headpiece tied it all together. This look was everything. 

The actress keeps it casual in a linen suit and effortless hair.

Take note: You need a suit with wide-leg pants for fall. Also, adding a floral pin to your suit won't hurt.

Looking like the ultimate queen of candy wonderland, Blake sports a cotton-candy pink Jenny Packham dress paired with yellow Christian Louboutin heels. This look is perfect for a picnic in the park or even a sweet stroll down candy lane. 

The starlet made a huge fashion statement in this plaid, black-and-white, fleece dress paired with a tan designer coat. 

This bright-red patent leather coat by Michael Kors does all the talking for this actress. The look is paired with pointed pumps and a natural face. 

Keeping it sexy and simple, the mom and wife opted for a sleek LBD with a plunging neckline paired with strap heels. 

The stunning actress bares some major leg in this gorgeous navy blue Sonia Rykiel tuxedo dress. This look could be casual or dressy, pairing it with anything from heels, sneakers...or do like Ms. Lively and add a tie for a pop of color. 

Blake looks like a lovely piece of graffiti art in this abstract and colorful Oscar De La Renta dress. 

OK, these embroidered heels definitely makes the look, but this fashionista paired them with this amazing oxblood leather trench and denim-blue wrap dress. Wow!

Blake show you how to make your boyfriend's suit look cute. The acting diva kills it in this Ralph Lauren ensemble. 

Ms. Lively sure knows how to pull off a red lip. This actress stuns in this Ralph & Russo suit paired with pumps. 

This babe was serving major vintage vibes in this all in one Chanel jumpsuit paired with pumps. 

Yellow yellow yellow! This Brandon Maxwell jumpsuit is fully equipped with all things chic and Blake is owning it.