Actress Mona Singh reunited with the '3 Idiots' director Rajkumar Hirani this Diwali.  On Wednesday, Mona took to her official Instagram handle and uploaded a few photos from the Diwali celebration hosted by the 'Munna Bhai M.B.B.S.' maker.

In the first photo, Mona posed with Hirani, with Hirani's son Vir joining the two for the next click. Boman Irani and Sunil Grover were also seen enjoying Hirani's Diwali bash.