Tyler Posey celebrates his 21st birthday

"Tyler Posey celebrates his 21st birthday alongside his pal Dylan O’Brien on Friday (October 19) in Las Vegas!

The two Teen Wolf heartthrobs were all smiles as they enjoyed their evening out at Tryst Nightclub."

(SOURCE: http://www.justjaredjr.com/2012/10/23/tyler-posey-21st-birthday-party-with-dylan-o%E2%80%99brien/)