To celebrate the day, husband Anand Ahuja took to social media to post an adorable wish for his wife.
Along with a black-and-white picture of Sonam, Anand wrote, "The look when @sonamkapoor sees her birthday (cake)!... That's just my way of downplaying just how breathtaking this picture is!"
Sonam married her long-time friend and Delhi-based businessman Anand Ahuja on May 8 in an Anand Karaj ceremony.
The couple will be celebrating the 'Veere Di Wedding' star's first birthday post the wedding in London.