Kundra planned a surprise birthday party for Shilpa in Montenegro and invited her close friends and family members to celebrate the occasion, without her being aware about it.
Shilpa's sister Shamita Shetty, and actro Harman Baweja were among the ones present at the party.
Shilpa took to Twitter to share her happiness about the surprise party on Monday.
"UNBELIEVABLE birthday surprise! In Montenegro and all my dearest family and friends flown in to wish me @TheRajKundra u r the "Bestest"" she wrote.
In another post, she added: "Can't believe @TheRajKundra pulled this one off without me having an inkling. Am in shock!! What a night, my best Birthday ever, thankuuu all."
She also shared an image with all the attendees at the party wearing white and black formal ensembles.
"Bond theme for last night," she captioned the photograph.
Shilpa, who married Kundra in 2009 and has a son Viaan with him, made her debut in Bollywood with 1993 film "Baazigar". She came into the limelight with her dancing moves in the song "Main Aayi Hoon U.P. Bihar Lootne" from 1999 film "Shool". Some of her other acting credits include "Chhote Sarkar", "Dhadkan" and "Rishtey".
Apart from that, Shilpa is a former contestant of internationally acclaimed British reality show "Big Brother". She is also a co-owner of Indian Premier League team Rajasthan Royals.
Meanwhile, many Bollywood stars took to Twitter to wish Shilpa.
Here's what the stars have to say:
Amitabh Bachchan: @TheShilpaShetty Shilpa ji ... !!! happy birthday .. important day and year for you .. sent you sms and to Raj .. did you get it ???
Riteish Deshmukh: Happy Birthday @TheShilpaShetty - have a blessed one - big hug
Karan Johar: Happy birthday @TheShilpaShetty.....hope you have the best year ever!!!!! Big hug!!!!!
Raveena Tandon: Happy happy birthday my dearest friend @TheShilpaShetty ! Hope you've had the greatest surprise today!(wink wink)With all our love!!
Bipasha Basu: Happy Birthday @TheShilpaShetty! Love ya
Manish Malhotra: Wishing my dearest @TheShilpaShetty a very HAPPY BIRTHDAY