The 54-year-old actor played professor Viru Sahastrabuddhe (Virus) in the 2009 hit film directed by Rajkumar Hirani, which also starred Aamir Khan, Sharman Joshi and R Madhavan.
"The housekeeping staff of the Ritz Carlton Hong Kong. Fans of '3 Idiots'. A favourite in these parts. Bless you Raju," Boman posted along with a photograph with the ladies.
"So much love! So much respect! It chokes you up with emotion," he added.