Mumbai, Nov. 9 -- Former couple Malaika Arora and Arbaaz Khan's son Arhaan turned 24 on Monday.

Marking his birthday, both Malaika and Arbaaz penned heartfelt wishes on their respective social media handles.

Malaika took a stroll down memory lane and shared a few childhood pictures of Arhaan. Check them out here.

"Ain't no mountain high enuf to climb ... my baby boy happy birthday . Love you the mostest @iamarhaankhan," she captioned the post.

Arbaaz said he is proud of how Arhaan has grown into a mature and confident young man.

"Happy 24th Birthday, Arhaan. 24 years of loving you, 24 years of being proud of you, and a lifetime of standing by you. I may not tell you every day, but I want you to know how proud I am of you. Being your ...