Zac Efron may be the lead in "The Lucky One," but all eyes were on his costar Taylor Schilling at the film's premiere last night.

The 27-year-old actresses turned heads in a Calvin Klein halter dress. The super sexy dress seemed to cling to her curves and also revealed a tattoo on her torso: An infinity sign.

Taylor isn't the only inked cast member. Zac Efron has a feather tattoo on one of his biceps and the letters YOLO -- which stand for "you only live once" -- on his right hand.

See more photos of Taylor, Zac and the always sexy Audrina Patridge on the red carpet, below!

"The Lucky One" opens on April 20, 2012.

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