David M. Benett/Dave Benett/Getty Images for LancomeTalk about a starry night in Paris!
Celebs stepped out for the Lancôme "WÔW" 80th anniversary party in the City of Light on July 7, including four of the brand's Oscar-winning ambassadors: Lupita Nyong'o, Julia Roberts, Penélope Cruz and Kate Winslet all attended the fête, and served us a healthy dose of glam while they were at it (naturally). Lupita turned heads in a glimmering Prada number, while Julia went for a sexy all-black shorts suit. Penelope, meanwhile, opted for black-lace Emilio Pucci confection, which became contender for best LBD of the night next to Kate's Azzedine Alaïa fit-and-flare design.
Lauded Italian actress Isabelli Rossellini also made an appearance, sporting a trim black tuxedo with Chanel pearls.
Other stars celebrating Lancôme's diamond anniversary included Lily Collins (who stunned in lacy Mikael D design featuring a high-low hem), Chrissy Teigen and handsome hubby John Legend (we gather this was pre-butt display) and Michelle Rodriguez (who kept it classic in a plunging black gown).
The party got (red) hotter with models Lily Donaldson and Petra Nemcova in attendance, while singer Kylie Minogue opted for a one-shoulder crimson mini.
Yep, we'd say the star power in the room was pretty impressive.
Who wore your favorite look last night?
PHOTOS: Stars at Paris Haute Couture Week fall-winter 2015