Busy Philipps flashes lingerie beneath sheer white dress at Lancome party in NYC as AnnaSophia Robb looks leggy in white mini-dress

Busy Philipps and AnnaSophia Robb wore wintery white dresses to the InStyle and Lancôme cocktail party, held Wednesday at the Park Lane Hotel in Midtown Manhattan.

The 44-year-old Girls5Eva star showed off her black bra and panties under a white sheer polka dot dress, black pumps and a matching bag, selected by stylist Karla Welch.

Hairstylist Kristin Heitkotter styled Busy’s (née Elizabeth) perky ponytail.

Makeup artist Kindra Mann applied Philipps’ shimmery eye shadow and bright red pout for the fashion festivities.

The Illinois-born blonde mingled with the likes of her Mean Girls co-star Avantika, author Tomi Adeyemi and singer Silas Silverman.

Busy confessed on Wednesday’s episode of TODAY with Hoda & Jenna that dating apps like Raya were “not for me,” nearly two years after her divorce from her husband of 13 years, Marc Silverstein.

Philipps and the 52-year-old I Feel Pretty director continue to amicably co-parent their two children: Birdie Leigh, 15; and Cricket Pearl, 10.

The Doing Her Best podcaster has been hard at work promoting her role as Mrs. George in Samantha Jayne and Arturo Perez Jr.’s film adaptation of the Broadway musical Mean Girls, which opens in U.S. theaters on Friday and January 17 in British theatres.

The 112-minute remake also stars Tina Fey, Tim Meadows, Jon Hamm, Reneé Rapp, Angourie Rice, Avantika, Bebe Wood, Auli’i Cravalho, Christopher Briney, Jenna Fischer, Ashley Park and Busy Philipps.

The musical by Jeff Richmond and Nell Benjamin is based on Mark Waters’ 2004 hit film, which was originally an adaptation of Rosalind Wiseman’s 2002 book Queen Bees and Wannabes.

Busy will also reprise her role as Summer Dutkowsky in the third season of Girls5eva, premiering on Netflix on March 14.

Creator Meredith Scardino’s critically acclaimed musical comedy about a one-hit wonder girl group from the 1990s – executive produced by Tina Fey and her husband Jeff Richmond – also starring Renée Elise Goldsberry, Sara Bareilles and Paula Pell.

AnnaSophia exuded 1960s glamor in a white short-sleeved mini dress with cutouts on the torso and matching accessories, selected by image consultant Yael Quint.

The 30-year-old former child star wore her fringed golden locks in a beautiful updo tied with a trendy bow.

Robb brought out her bushy eyebrows and wore a pink shade on her lips and cheekbones.

Tanqueray’s paid partner posed with Ramzy Burns, general manager of Kiehl, who has been with the French cosmetics house for almost 34 years.

AnnaSophia – who married First Look Media legal director Trevor Paul 16 months ago – later hit the frozen streets of the Big Apple in a beige faux fur coat.

Robb recently reprized her role as the accidental creator of a hate group in Mercedes Bryce Morgan’s short film ESC, about cyberbullying that leads to a mass shooting.

Foy Vance’s video star plays a mysterious role in Jeremy Saulnier’s Louisiana-set action thriller Rebel Ridge for Netflix.

And AnnaSophia will also star in Ken Kwapis’ John Kennedy Toole-themed drama Thelma alongside Kathy Bates, John Malkovich, Tim Blake Nelson and Stephen Root.

The cocktail party was also attended by Amanda Seyfried, Lancôme brand ambassador since 2019, and Isabella Rossellini, Lancôme brand ambassador since 1982, who welcomed the newest global ambassador Joy Sunday.

The 38-year-old Mean Girls alum wore a black silk blazer over a white mini-0 dress and slingback heels selected by stylist Elizabeth Stewart.

The 71-year-old daughter of Ingrid Bergman – who is loved by David Lynch and Martin Scorsese – wore a leopard print maxi coat and slippers with a black top and trousers.

Isabella also rocked a matching red and leopard print manicure by nail artist Ami Vega.