India, May 3 -- Actor Rashmika Mandanna's younger sister, Simran, has turned 13. On her birthday, the actor took to Instagram to post pictures of her celebration. She also had sweet sisterly advice for her as she stepped into her teens a month after Rashmika turned 30.

Rashmika posted pictures of Simran on Instagram to wish her a happy birthday. One picture shows Simran in a white dress with pearl detailing, posing with a blue heart-shaped cake adorned with black ribbons. A rainbow-hued sign with her name on it and twinkling lights in the background. Another picture shows Simran with icing smeared across her face, smiling widely.

Posting the pictures, Rashmika offered her sweet sisterly advice, writing, "Happiest 13 to you my sweets! 13...