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Sofia Richie and Barbie Ferreira strike poses while attending a celebration of the new Estée Lauder Act IV capsule makeup collection on Friday (January 10) in Beverly Hills, Calif.

The event was thrown by Violet Grey‘s Cassandra Grey to honor Danielle Lauder, an aspiring actress and the great-granddaughter of Estée Lauder.

More celebs in attendance at the event included actresses Ellen Pompeo, Jaime King, Retta, and siblings Mark Ronson and Samantha Ronson.

“I am so excited to be launching my limited-edition makeup collection with Estée Lauder and to be debuting Act IV at one of my favorite beauty destinations, Violet Grey,” Danielle said in a statement. “The Act IV Collection was inspired by Hollywood, making Los Angeles the perfect place to launch. I’m so grateful to Cassandra and the entire Violet Grey team for allowing me to bring the collection to life in the heart of LA.”

FYI: Barbie wore Haiki platform shoes.

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Harry Styles poses with a pal while getting ready for his 21st birthday bash on Saturday night (January 31) in Los Angeles.

The One Direction hottie partied with a ton of famous friends, including Kendall Jenner, David Beckham, Cara Delevingne, Rita Ora, Rashida Jones, Kelly Osbourne, Alexa Chung, Samantha Ronson, and Nadine Leopold.

PHOTOS: Check out the latest pics of Harry Styles

Jennifer Lawrence and Chris Martin were also spotted celebrating with Harry that night.

“Thank you for all the lovely messages for my birthday. All the love. H,” he later tweeted.

15+ pics inside from Harry Styles‘ birthday party… More Here! »