Paris Hilton Parties for Her Mom's Birthday!

Seek and ye shall find... your parents smooching! Paris Hilton partied for a great cause in West Hollywood last night — her mom Kathy Hilton's birthday! Kathy got a big kiss from her husband Richard Hilton to make sure the night at Dan Tana's stayed festive!

OK! GALLERY: PARIS & DOUG DON DIFFERENT LOOKS

Paris probably got some smooching of her own in, as boyfriend Doug Reinhardt accompanied her to the birthday celebration.

You know what they say, the family that goes out together, stays together!

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