Pakistani actor Ali Zafar seems to be having a tough time perfecting his dance steps for a Bollywood item number.

"Most painfully joyous process. Dance rehearsal for an item number! Fully Bollywood! Must sit in a tub full of ice before sleeping!" Ali wrote on his Twitter page.

The actor-singer is currently busy shooting for filmmaker David Dhawan's "Chashme Buddoor" remake. Apart from Ali, the film also stars Anupam Kher, Rishi Kapoor, Siddharth and Divyendu Sharma of "Pyaar Ka Punchnama" fame.