The pool at Wet Republic in Las Vegas was celeb-packed this weekend -- as Avril Lavigne and the cast of "Hellcats" both held giant pool parties!
First up was Avril, who turned 27 in September but celebrated Saturday with a bash loaded with skulls and punk pink candy. Boyfriend Brody Jenner was nowhere to be seen.
Yesterday, Ashley Tisdale and the rest of the her CW show hit the MGM Grand pool for their own bash, where Tisdale was snapped taking a tip with her BF Scott Speer.
Check out all the Vegas pics!
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