Tom Cruise and Katie Holmes, along with Will Smith and Jada Pinkett Smith, hosted a bash for their new neighbors, Brits Victoria and David Beckham, at the Museum of Contemporary Art's Geffen Contemporary in Los Angeles July 22.
The A-list guests included newlywed Eva Longoria (but no Tony Parker), Demi Moore and Ashton Kutcher, Jim Carrey and Jenny McCarthy, Rihanna, Eve, Brooke Shields and husband Chris Henchy, Adrian Grenier and Queen Latifah.
On the menu: A tower of chocolate cupcakes, hamburgers, fries, chicken wings, pizza, mashed potatoes and salad. How pissed is Britney Spears that she missed this!?
Celeb DJ Samantha Ronson â€" Lindsay Lohan's pal â€" spinned tunes, including "Rehab" from Amy Winehouse, John Mellencamp's "Jack and Diane," and the Spice Girls hit "Wannabe."
The former Posh Spice got "really shy and did not sing along," says a guest.
Stevie Wonder entertained the crowd with a 15-minute set that included his hit "Signed, Sealed, Delivered." TomKat sang along, while Smith picked up wife Pinkett so she could see Wonder in action, the witness says.
"This is amazing! I can't believe Stevie Wonder is singing!" an elated Victoria Beckham gushed to her BFF Katie Holmes.
Sadly, no Suri Cruise sightings were reported by witnesses.
Later on, Will Smith grabbed the mic for an impromptu rap session, splitting up the dance floor into two sections, going back and forth to both sides to see who was having more fun, demanding that each side scream louder. Then, he did some splits!
"The look on Tom's face was priceless," a witness says.
By 1:40 a.m., Tom Cruise, Holmes and the Beckhams called it a night.