Labor Day weekend marked one of the last weekends of summer -- and you better believe the stars were out celebrating!
Snooki, Jwoww, The Situation and Sammi Sweetheart all ventured to Las Vegas for a whirlwind visit of pool parties and night club appearances - and one of 'em even judged a bikini contest!
Snooks spent her time in Sin City with boyfriend Jionni LaValle, and was heard on the red carpet at Pure telling one reporter "It's our second time to Vegas together and we might be going to the chapel it's that serious.” Thankfully, she was only joking.
Pauly D got to work at the Palms Casino Resort, where he was seen spinning at Ditch Friday at the Palms Pool & Bungalows and then at Rain Nightclub.
Back in California, there were a ton of celeb sightings at the Malibu Fair, including Nicole Richie and her adorable daughter Harlow, P!nk with her new baby, Tori Spelling and family and LeAnn Rimes with Eddie Cibrian's kids.
Hotties Kristin Cavallari and Stacey Keibler were spotted in L.A., relaxing poolside in bikinis.
Check out the gallery above for those shots, plus appearances from Diddy, Paris Hilton, Ciara, AnnaLynne McCord, Nicole Scherzinger and more!
