Lenny Kravitz shares a sweet throwback photo for daughter Zoe's birthday

Zoë Kravitz turns 33 on Wednesday.

Lenny Kravitz couldn't help but gush over his daughter, actress Zoë Kravitz, on her birthday.

The singer shared a throwback photo in which he and a young Zoë are playing in the sand at the beach. Zoë Kravitz turns 33 on Wednesday.

"Happy Birthday, Zoë. So many more castles to build together. I love you endlessly," he wrote in the caption.

Zoë Kravitz is the only child of Lenny Kravitz and his ex-wife, actress Lisa Bonet. Bonet also has two children with her current husband, "Aquaman" star Jason Momoa.

"People can't believe how tight Jason and I are or how tight I still am with Zoë's mom, how we all relate," Kravitz told Men's Health magazine last year. "We just do it because that's what you do. You let love rule, right?"