Actor Siddharth is in awe of actor Aamir Khan and can't stop heaping praises for his item song in his upcoming production venture "Delhi Belly".

"Aamir Khan's item number for 'Delhi Belly' is the most iconic contribution by a producer I have ever seen. He is and always will be the best, " Siddharth posted on microblogging site Twitter.

Siddharth has previously worked with Aamir in 2006 film "Rang De Basanti".