Sean Penn, Charlize Theron make out at Madonna's Oscar afterparty
- Photo: GettyImages.com1 of 11
- Photo: Jordan Strauss/Invision/AP2 of 11
- Photo: Getty Images North America3 of 11
- Photo: John Shearer/Invision/AP4 of 11
- Photo: FS2/WENN5 of 11
- Photo: TrickyD/Fame Flynet6 of 11
- Photo: Kevin Mazur / (Inset: WENN)/Getty Images North America7 of 11
- Photo: infusla-275/INF8 of 11
- Photo: 4CRNS/O. Duran/Fame Flynet9 of 11
- Photo: 4CRNS/O. Duran/Fame Flynet10 of 11
Leave it to Madonna to be a good sport. As per tradition, the pop legend, 55, hosted her annual Oscars afterparty on March 2 at the mansion of her manager Guy Oseary, with festivities raging from 10 p.m. to around 6 a.m.. Among the night's many, many A-list guests were her ex-husband, Sean Penn, and his girlfriend, Charlize Theron.
Fellow Oscar winners Penn, 53, and Theron, 38, were "making out like crazy" and "all over each other" on the dance floor, an observer at the bash tells Us Weekly. "They were the talk of the party -- even Madonna noticed!" Penn and Madonna divorced way back in 1989; she eventually married and divorced Guy Ritchie, while he divorced Robin Wright after 14 years in 2010.
Still, the former couple's 4-year union was passionate, and the Material Girl's close pal Debi Mazar recently quipped that Penn remains Madonna's "one true love." Over the years, Penn was supported his ex-wife at concert performances, and she recently joined him in Haiti on a humanitarian project.
Regardless, Penn and Theron's makeout session was on display for all to see -- including attendees Julia Roberts, Nicole Richie and Joel Madden, Brad Pitt and Angelina Jolie, Miley Cyrus, Tom Ford, Ellen DeGeneres and Portia De Rossi, John Travolta and Kelly Preston ... even Madonna's teenagers!
Past 2 a.m., "Madonna was dancing up a storm with her kids Lourdes and Rocco on the dancefloor," the observer says. "She kept walking around the party trying to get everyone to dance.
MORE FROM WONDERWALL:
Fergie, Sarah Jessica Parker, and Heidi Klum all get an F on this week's Fashion Offenders.Watch Video »
Diva Double Date
Beyonce and Alicia Keys double date with their famous hubbies on today's Celebs Gone Social.Watch Video »
Where Are They?
See what the cast of "American Beauty" is up to today.Watch Video »
J.Lo's Mini Me
Jennifer Lopez shares an adorable photo of her look-alike daughter, plus more celebritots on social media on today's Celebs Gone Social.Watch Video »
Prince Harry, Jessica Alba and more stars who threw out the first pitch at baseball games.Watch Video »
Sofia Vergara poses in a revealing neon bikini while her "Modern Family" castmates hit the beach in Australia on Celebs Gone Social.Watch Video »
Like us on Facebook?
UP NEXTBaby Joy
From Crowd Ignite