Romeo Beckham's Star-Studded Sixth Birthday

Posh's son celebrates his sixth birthday party with a slew of celebs and their famous offspring

He may only be 6, but Romeo Beckham already has more famous friends than we do.

When Posh threw him a costume party at the Hard Rock Cafe in Universal Studios yesterday, Heidi Klum, Gavin Rossdale and Geri Halliwell all came out with their tykes to celebrate. (New mom Gwen was probably home with baby Zuma.)

And while the kids dressed in costumes, Posh and Heidi dressed up...sporting high heels and dresses for the occasion.