Courteney Cox was giving off some major Baywatch vibes to celebrate her birthday on Monday. The Friends star took to Instagram to share a slow-motion video of herself running in a black bikini before diving into a pool. Her celebrity pals wished her a happy birthday, including stylist Rachel Zoe, who commented, "Happiest birthday @courteneycoxofficial and you look ." Over the weekend, the actress shared a sweet throwback video of her daughter, Coco Arquette, ice skating to ring in the teenager's sweet 16 birthday. RELATED CONTENT:Courteney Cox Shares Sweet Throwback of Coco for Her 16th BirthdayWatch Courteney Coxs 15-Year-Old Daughter Do Her Makeup in QuarantineCoco Arquette Hilariously Grills Mom Courteney Cox on Pregnancy and Parenthood