Hollywood A-listers shined on the red carpet at the 86th Academy Awards on Sunday, but the fun didn't stop there.

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Many celebrities joined the two main Oscar after-parties -- the Governors Ball and the Vanity Fair party -- and even changed from one glamorous outfit to another.

Power couple Angelina Jolie and Brad Pitt made their way to the after-party and were also accompanied by their 12-year-old son Maddox. 

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Channing Tatum showed up to the Vanity Fair party with his wife, Jenna Dewan, who wore a Stuart Weitzman dress.

Best supporting actor nominee Bradley Cooper was also there along with his mother and his date Suki Waterhouse. His American Hustle co-star Jennifer Lawrence also joined in on the festivities in a metallic Tom Ford dress.

Other stars uploaded festive photos on their social media accounts as they mingled with fellow celebrities and partied the night away.

Actress and singer Anna Kendrick changed out of her black J Mendel Oscar dress and sported a Versace Couture gown at the Vanity Fair party.

"Weird that no one gave me the memo about wearing a white sparkly dress... Can I not sit at the cool kids table? #Oscars," she tweeted on the same day.

Selena Gomez met up with her friend Vanessa Hudgens at the same party and posted an adorable shot of the two hugging. Earlier in the night she also posed for a silly snapshot with actress Zooey Deschanel.

Television anchor Al Rocker took a selfie with Newsroom star Olivia Munn.

Singer John Legend posed with actor Joseph Gordon-Levitt in an Instagram photo, and both stars were matching in a black suit and bow tie. Legend also performed at The Governor's Ball singing some of his hits including Ordinary People.

Model Petra Nemcova uploaded a photo, in which she smiled next to legend Quincy Jones.

Another model Irina Shayk posed with Modern Family star Sofia Vergara and called her the “sexiest woman alive.” In another photo, she chowed down on a hamburger with some of her friends.

The Kardashian sisters - Khloe, Kim and Kourtney - also showed up to a special Oscars event, Elton John's AIDS Foundation Academy Awards Viewing Party. Khloe and Kim both look glamorous in red gowns, while Kourtney sported a Saint Laurent women's suit.

Tags: Oscars 2014