Credit: Keith Johnson/Bauer-Griffin/GC Images

Anyone who has opened an internet browser during the last few days probably realizes today, Aug. 10, is Kylie Jenner’s 18th birthday. The reality star, her famous sisters, and her boyfriend — 25-year-old rapper Tyga, who gifted Jenner a Ferrari — have documented the milestone on social media. And now, so too has Caitlyn Jenner. Kylie’s parent posted an equal parts touching and cheeky message to the teen on Twitter.

“Happy birthday to my little angel @KylieJenner,” Caitlyn wrote. “Officially my last adult, my work is done. Love you, proud of you!

Caitlyn celebrated Kylie’s birthday all weekend, including posing for photo alongside other members of the Jenner-Kardashian family.