Jennie Garth (center) and friends
08/31/2012 at 06:00 AM EDT
That's one hot momma!
celebrated Labor Day weekend at Azure Pool at The Palazzo Las Vegas. Wearing a neon yellow string bikini, the mom to daughters, Luca, 14, Lola, 9, and Fiona, 5, stunned onlookers with her svelte beach body.
Garth – who is casually dating
photographer Noah Adams – soaked up the sun as she enjoyed the sounds of DJ MomJeans, also known as Danny Masterson.
"At one point, she stepped into the DJ booth and spoke with Danny and actor Michael Pena about Pena's new movie End of Watch
," a source tells PEOPLE.
While lounging poolside with her girlfriends, a male admirer playfully pulled the Jennie Garth: Little Bit Country
star into the pool. "Her friends jumped in with her and began splashing the crowd," says a source.
– Melody Chiu