Fall is on its way -- and this weekend, some big stars celebrated the final days of summer in style.
Celebs spent Labor Day weekend doing anything but work, as they were seen hitting pool parties, beaches, parks and more in Los Angeles, Las Vegas, New York, Miami and even Venice, Italy.
In Los Angeles, there were a lot of family sightings. P!nk, Cindy Crawford, Alessanda Ambrosio, Kris Jenner and Kourtney Kardashian all stepped out in Malibu with their adorable kids ... most of them attending the annual Chili Cook-Off.
Other cute family sightings included Katie Holmes with Suri in NYC and Jennifer Lopez and Casper Smart in Miami .... where they played poolside with J.Lo's kids Max and Emme.
Couples like Kim Kardashian and Kanye West and superstars Beyonce Knowles and Jay-Z also stepped out for some fun in the sun.
And in Vegas, there were no kids to be seen ... as the real partying happened in the pools and clubs!
Michael Phelps celebrated his retirement at Surrender Nightclub and Encore Beach Club, Jenna Jameson hosted Crazy Horse III in a very risque outfit, Ice-T and Coco hit up LAX nightclub, Diddy hosted a bash attended by Chris Brown and Jennie Garth showed off her bikini bod at Palazzo's Azure pool.
Check out all those sightings and more in the gallery above!