Ayushmann Khurrana: Happy birthday Sonu da!
Shaan: Sonu Niigam, congratulations brother! You are 20 again. Very happy birthday to one of finest gems of music and entertainment!
Divya Dutta: Sonu Niigam, happy birthday to my dearest sweetest friend! God bless.
Lata Mangeshkar: Today is the birthday of our favourite singer Sonu Niigam, lots of love, best wishes and blessings to Sonu. [sic]
Salim Merchant: Happy birthday Sonu Niigam! Wish you lots of happiness and more success.
Mika Singh: Happy birthday to the most talented and my brother Sonu Niigam! May you live long! May God give you lots of happiness! God bless!
Shirish Kunder: Wishing my all-time favourite singer and a gem of a person Sonu Niigam a very happy birthday and loads of love.
Sophie Choudry: Happy birthday to one of my most favourite singers in the world! Happiness and success always! Much love Sonu Niigam.
Aadesh Shrivastava: Wishing my dear Sonu Niigam my very best wishes on his 39th birthday today. Sonu has always made the celebrations of my life unforgettable and large! I am grateful to have a friend and person like him in my life!
Anubhav Sinha: Happy Birthday Sonu Niigam. Keep rocking and ballading.
'Look' how the Sheena Bora case has taken a toll on Indrani Mukerjea
Photos: Katrina Kaif, Parineeti Chopra, Shilpa Shetty's movie outing in Juhu
Birthday special: 14 Bollywood actors who made it big on TV
Photos: Vaani Kapoor, Poonam Pandey, Sana Khan at fashion event
Photos: Rishi Kapoor, wife Neetu, daughter Riddhima at book launch