No partying for Sara Ali Khan; here's how she is spending her birthday today!

Saif Ali Khan & Amrita Singh's darling daughter Sara Ali Khan, who is set to make her Bollywood debut with Abhishek Kapoor's 'Kedarnath' opposite Sushant Singh Rajput, is celebrating her 25th birthday today. Sara Ali Khan is one of the most popular star-kids of Bollywood and all thanks to her fans, she is trending on Twitter on the special day. Every year, Sara Ali Khan celebrates her birthday in a grand way with her family and friends. But this year is going to be different for Sara due to her work commitments. Sara Ali Khan (Photo: Instagram) Sara Ali Khan looks stunning as she poses with co-star Sushant at 'Kedarnath' wrap-up bash! Yes, Sara Ali Khan will not be partying hard this year on her birthday as she is spending her day in dance rehearsals for a song of her second Bollywood film 'Simmba', to be directed by Rohit Shetty. Paired opposite Ranveer Singh in Simmba, Sara will be shooting the song in the next few days. Speaking about the same, a source told a leading daily that, “Sara, who otherwise rings in her birthday with friends and family, will spend the day rehearsing for a song from her upcoming film. The song that Sara is rehearsing for is an important and big one. Although the makers asked her to take an off for her birthday, she has chosen to continue rehearsing.” Hmm...even before the release of her first Bollywood film, Sara is proving that she is a thorough professional. The source also spoke about Sara's hard work and told Hindustan Times that, "Sara is really committed to her work, and there’s a lot of excitement [around her]. So, she is leaving no stone unturned for her first films." On the career front, Sara has already completed the shoot of her first film 'Kedarnath' which will hit the screens this year on 20th November. Whereas, her second film 'Simmba' is said to be releasing on 28th December. Here's wishing a very happy birthday to her!