The British model was showered by her famous friends with a ton of warm wishes to celebrate her 23rd birthday Wednesday.
Swift shared a screen grab of surprise photos that Delevingne snapped when the singer's phone was unattended.
"Happy birthday to cheeky, charming @Caradelevingne- who lights up my life..and regularly steals my phone & does this," she wrote beside the photo.
"Happy Birthday Beautiful," she wrote.
Williams shared some fun shots of the two of them, writing, "Always making me laugh ?? Happy birthday lil sis, Pharrell."
Fellow model Gigi Hadid posted some behind-the-scenes Polaroids.
Actress Hailee Steinfeld revealed the bond she shares with Delevingne in her birthday tweet.
Meanwhile, fellow model and bestie Suki Waterhouse dropped a couple hints about how Delevingne celebrated her birthday.
"#CD23 crew has arrived," she wrote, captioning a photograph of her with fellow model Clara Paget and TV host Poppy Jamie at the beginning of the night.
Later, Waterhouse posted a photo of her posing nude behind a towel with the Canadian city of Toronto as a backdrop. She simply captioned it "#Toronto CD23," using Delevingne's initials.