The former couple was also joined by Kate‘s 12-year-old son Ryder for the special occasion.
The family headed to the Palace Theatre in London to see a special viewing of Harry Potter and the Cursed Child play, which officially opens at the end of the month.
“Happy Bday Bing!!! #harrypotterandthecursedchild @katehudson xxx,” Matt wrote on his Instagram, with Kate later adding, “Bday time 💛”
See the cute family snap below…