Bollywood actress Alia Bhatt received the best birthday surprise from her grandparents this year. The 'Kapoor & Sons' star, who turned 23 on March 15, was in tears when her grandparents wished her happy birthday in the 'most beautiful way'.

Alia's grandmother Trudy Razdan (Gertrude Hoelzer) played the 'Happy Birthday' song tune on a harmonica, while her grandfather N Razdan played the tune on a violin.

Alia's sister Pooja Bhatt shared the video on Instagram and wrote, "Happy Birthday Alia!! A glorious rendition of Happy Birthday for @aliaabhatt by her dazzling grandparents! Naturally there was not a dry eye in the house.. Not that there ever is a shortage of waterworks at a Bhatt family do but this one was truly special!#Birthdays #family #grandparents #Bhatts #legacies #giftsthatkeepongiving #memories #waterworks."

A video posted by Pooja B (@poojab1972) on Mar 21, 2016 at 9:28am PDT

Alia also shared a similar video and wrote: "My grandparents wish me happy birthday in the most beautiful way... couldn't hold back my tears... #belatedbirthdaycelebration @shaheenb @poojab1972."

A video posted by Alia (@aliaabhatt) on Mar 21, 2016 at 8:59am PDT

Pooja posted a picture of an emotional Alia hugging her grandmother while posing for the photo and captioned it, "Priceless! @aliaabhatt celebrates her birthday with her stunning grandmother Trudy Razdan... 64 yrs separate these beautiful women! #legacies #family #familytree #blood #grandmothers #granddaughters #blessings."

A photo posted by Pooja B (@poojab1972) on Mar 21, 2016 at 10:08am PDT

On the Bollywood front, Alia Bhatt's latest release 'Kapoor & Sons' has garnered rave reviews. (Here's how much the film has earned in opening weekend at box office) Alia will be next seen in 'Udta Punjab' with Shahid Kapoor and in Gauri Shinde's next with Shah Rukh Khan.