Mumbai: Bollywood actress Sara Ali Khan posted a cute image on Instagram to wish her brother Ibrahim Ali Khan on his birthday.

In the adorable post, Sara described her brother as her number '1 boy'.

"Happiest Birthday to my (not so) little IGGY potter," Sara wrote.

"The day you were born I knew I wouldn’t be moms #1 child, and now post Fuffy Singh I’m happy that you’re not the superlative either. Regardless, you’ll always be my #1 boy," she said.

Sara and Ibrahim are the children of Bollywood actors Saif Ali Khan and Amrita Singh.

The image is also interesting as it gives a glimpse into the room of the Bollywood beauty Sara and her brother.

Sara was last seen in the movie Atrangi Re.