Following the awards show, celebrations heat up all over town, but one of the hottest in Hollywood, Hart said, is always the Vanity Fair party - and she scored an invite.
She said, "I can tell you, it was great to see Oscar co-host, Steve Martin, getting loose with his old 'Saturday Night Live' pal Chevy Chase."
But before Vanity Fair's event, the first stop for Oscar winners is always the Governor's Ball.
Best Actor winner Jeff Bridges told "Entertainment Tonight" there, "It's a wonderful night. I don't think I've had a better night."
At the ball, Mo'Nique said she and her husband Sidney Hicks were planning to do something "a little different" after the awards.
She said, "Tonight we are going to have Uncle Andre's barbecue, and we're going to go home baby, and enjoy it."
For others, the after-party plan was just to bask in a win.
Best Supporting Actor Christoph Waltz said he was feeling "absolutely fantastic." Kathryn Bigelow said her Best Director win was "phenomenal."
Best Actress winner Sandra Bullock told "Entertainment Tonight" she was planning toagain, but didn't.
Bullock said, "I wanted to, but the dress wouldn't allow me."
At the Governor's Ball, executive producer Oprah Winfrey lauded "Precious," saying, "This is one of the greatest American success stories: You audition, then (director) Lee Daniels tells you you get the job, and (Mo'Nique) knocked it out of the park."
Next stop on the party trail was an "Entertainment Tonight" exclusive at the Vanity Fair party. Oscar winners galore mingled with TV stars, including Simon Baker, John Hamm, CBS president and CEO Les Moonves and "Early Show" co-anchor Julie Chen.
Jamie Foxx, Selma Hayak, and Olympian Apollo Ohno joined other stars at Elton John's AIDS Foundation Academy Award Party.
Elton John told "Entertainment Tonight," "You got to make sure that people who pay a lot of money to get tickets, that they have to have a great evening and make sure that David and I say hello to them."
Hart said, for her, an added bonus of attending the after-parties was meeting gold medalist figure skater Evan Lysacek, actresses Cameron Diaz, Jodie Foster and Kristen Stewart, and actor Sean Penn.