Rob Kardashian celebrated his 31st birthday on Saturday.
Extra reports that he was showered with birthday wishes from family, friends and an one unexpected person ...
His ex-fiance, Blac Chyna...
Rob and Chyna have a daughter together, Dream Kardashian.
Chyna posted a picture of her and Dream on her Instagram Story with the message "Happy Birthday Rob from Dreamy and Chy."
The couple called it quits in February 2017, have endured nasty legal battles ever since.