CAguileraMax052508_004_X17.jpgCAguileraMax052508_001_X17.jpgNRichieGStefani0525_02_X17.jpgNRichieGStefaniParty0525_07.jpgVictoria Beckham NRichieGStefaniParty0525_17.jpg

Gwen and Gavin threw a huge second birthday party for little Kingston yesterday and all the A-List moms and kids showed up, including Nicole Richie, Joel Madden and adorable little Harlow, Xtina & Jordy with Baby Max (for once!), and the Beckhams!

This is the first time we've seen little Max Aguilera-Bratman since his mama debuted him on the cover of a mag, and he's absolutely adorable!

Harlow, getting cozy with Gwen, is definitely giving Max a run for his money in the cuteness department, though.

We already knew Kingston was the coolest kid in town, but this star-studded party pretty much seals the deal.

Can't you just see Kingston and Harlow becoming Hollywood's hottest couple in about 20 years?

We've got tons more cute pix from the party, so check out the gallery!