As Karisma Kapoor turned 51 on Wednesday, actress Kareena Kapoor wished her sister and called her the “strongest and the bestest girl in the universe.”

Kareena took to Instagram, where she shared a throwback image of her sister Karisma and husband Saif Ali Khan, which the “Jab We Met” star tagged as her “most favourite” picture of both.

For the caption, Kareena wrote: “This is my most favourite picture of you both. To the strongest and the bestest girl in the universe…”