Zac Efron celebrates his 30th birthday on October 18th. The Neighbors star was born in 1987 in San Luis Obispo, California. Lindsay Vonn turns 33 today. The US skier was born in Saint Paul, Minnesota in 1984. Tyler Posey will turn 26-years-old on Wednesday. The Teen Wolf star was born in Santa Monica, California in 1991. Bristol Palin turn 27 today. She was born in Wasilla, Alaska in 19990. Happy Birthday!
