The American stars hit the beach in LA yesterday to celebrate Ashley's 27th birthday.
And the pair made sure that they showed off their enviable figures as they messed around with friends in the sand.
Actress Ashley Tisdale made us even MORE jel by making a PDA with her hunky music director boyfriend Scott Speer - who she's back on with after splitting from him in December.
The all American girl made us feel bad about the pizza we ate at the weekend as she ran around the beach with her dog in cut-off denim shorts and a lime tassled bikini top.
[Related story: Ashley Tisdale wears Britney's XF dress]
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Justin Bieber's gorgeous girlfriend Selena Gomez made sure we ALL got a glimpse of her abs as she lifted up her turquoise vest.
The 22-year-old showed off her tanned legs as she played in the sand in white denim short, a waterfall cardi and wayfarers.