The elated actor, who ventured into Bollywood in 2003 with the film 'Tujhe Meri Kasam', has also thanked her fans and well-wishers for their support.
The 'Ek Villain' star took to the photo-sharing website, where he shared a photograph of himself sporting a beard and long hair.
The 37-year-old actor is seen sporting the classic white v-neck t-shirt and blue jeans.
"We are a crew of two million (Instagram) now. Thank you for your love n support," Riteish captioned the image.
The 'Tere Naal Love Hogaya' star will next be seen in the third installment of 'Housefull' directed by Sajid-Farhad Samji's.
The film also features actors Akshay Kumar, Abhishek Bachchan, Nargis Fakhri, Lisa Haydon and Jacqueline Fernandez.
'Housefull 3' is slated to hit the theatres on June 3.