Ashely Tisdale spent Sunday at Wet Republic at the MGM Grand Hotel in Las Vegas, and RadarOnline.com has the eye-popping pictures of the singer/actress in her tiny pink bikini.

PHOTOS: Ashley Tisdale Flaunts It In Her Skimpy Pink Bikini

Ashley was at the poolside club with her boyfriend Scott Speer, and they could barely keep their hands off each other.

PHOTOS:  Summer Birthday Bikini Babes

The Suite Life of Zach and Cody alum is in talks to star in High School Musical 4.

PHOTOS: Kendra Stays Cool At Wet Republic

Related Stories:

Holly Madison Hosts Vegas Bikini Contest

PHOTOS: Hottest Bikinis Moms In Hollywood