Entertainment TV Jennifer Aniston Wishes Best Friend Courteney Cox a Happy Belated Birthday: 'I Love You, CC' Courteney Cox celebrated her 56th birthday on Monday By Georgia Slater Georgia Slater Twitter Georgia Slater is a writer/reporter on the Parents team at PEOPLE. People Editorial Guidelines Published on June 17, 2020 09:06 AM Share Tweet Pin Email Photo: Gregg DeGuire/Getty Images Jennifer Aniston is still there for Courteney Cox on her birthday! On Tuesday — one day after Cox's actual birthday — Aniston celebrated her costar-turned-best friend's 56th birthday, sharing a series of sweet pictures on her Instagram Story and apologizing for the delay. "Happy birthday to this amazing human❤️," Aniston, 51, captioned a photo of Cox facing the camera with a smile. "I love you, CC. 🎉❤️🥳🎈," she wrote next to a snap of the Friends stars cuddled up together. The Morning Show actress went on to apologize for getting her birthday wishes in a day delayed, writing, "Sorry I'm late🤦🏼♀️." Jennifer Aniston Instagram Jennifer Aniston Instagram Courteney Cox Shows Off Her Diving Skills in Black Bikini as She Celebrates Her 56th Birthday Jennifer Aniston Instagram And would Aniston's birthday post be complete without a Friends reference? In the last slide, the actress posted a throwback photo of Aniston and Cox's characters, Rachel Green and Monica Geller, sharing a sweet moment together on the sitcom. Jennifer Aniston Instagram "The end," she captioned the last picture. Aniston wasn't the only Friends star to pay tribute to Cox on her special day. Friends Reunion Won't Tape Until There Can Be a Live Audience: 'It’s Worth Waiting for' Lisa Kudrow, who played Phoebe Buffay on the iconic series, shared a heartwarming post on Tuesday in honor of Cox's birthday. "Happy birthday @courteneycoxofficial my genius generous gorgeous grounded great good FRIEND I love you," Kudrow, 56, captioned a series of photos. In the pictures, the two are seen snuggling up to one another while playing with Cox's two adorable pet dogs. "I love you loot!! So much xx," Cox replied to the post. To commemorate her special day, Cox shared a slow-motion video on her Instagram running into her pool and diving in as New Radicals' 1998 hit, "You Get What You Give" played in the background. "Gracefully diving into this next year... #oaf," she wrote. Cox looked confident as ever as she sported a black bikini that showed off her toned figure, which had fans complimenting her ageless appearance in the comments of the post. One person jokingly said, "how are you 56!?!?" Another fan wrote, "what’s your secret to looking sooo beautiful?? 😭😭"