Heather Locklear and Richie Sambora's little girl is ... NOT a little girl anymore -- Ava Sambora is now a full-fledged model.
18-year-old Ava did a photo shoot on the beach in Malibu -- and clicking through this gallery should answer all your questions about how DNA works. She's kind of a genetic sure thing -- and probably a great guitarist too.
Mom and Dad gotta be proud.
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