In celebration of National Lookalike Day on April 20, Wonderwall.com is taking a peek at some of our favorite stars and their famous doppelgängers… starting with these lookalikes! “The O.C.” star Rachel Bilson seems to have a mini-me — none other than fashion model Kaia Gerber! Aside from their wavy light brown locks, the two celebs share similar face shapes, eyes, and lips.
