India, Aug. 9 -- Ibrahim Ali Khan took to Instagram on Raksha Bandhan to post sweet pictures with his sister Sara Ali Khan. He also wrote a note making some sincere promises to her and showed off the Rakhi she tied. Sara called him the 'best brother' in return for all the love.

Ibrahim posted pictures of himself dressed in a blue kurta and Sara in a yellow one. One picture shows Sara holding him as their pets look on. Another shows him holding her close and kissing her forehead. Ibrahim also posted a picture of the Rakhi Sara had tied.

Sharing them, he wrote, "Dear sister @saraalikhan95, I promise in this lifetime to always take care of you, always stand by you, always support you. I promise to give you love, strength and everything I c...