Actor Arjun Kapoor has penned an adorable post for her cousin and actor Sonam Kapoor who welcomed a baby boy with husband Anand Ahuja a few days ago.

Taking to Instagram, Arjun shared a throwback picture with Sonam.

In the image, Sonam is seen cradling her baby bump while sitting next to Arjun.

Sonam looked gorgeous in a black dress while Arjun looked dapper in a rust colour suit.

“Look Who’s all grown up & is a mother now !!! OMG it’s you @sonamkapoor,” he captioned the post.