But true actors that they are, they don't let their nerves show as they walk down the green carpet armoured in their designer labels.
We spotted some quirky looks this evening - like Gauhar Khan, who reminded us of a chicken! - and some really delish fashion - like Jacqueline Fernandez's gold mermaid Roberto Cavalli and Neha Dhupia's Anamika Khanna embroidered jacket and black pants.
The men weren't so bad either. While most of them went with either black or dark grey suits, Neil Nitin Mukesh donned a red jacket, which gave him the look of a circus ringmaster.
Prabhudeva tried a sassy look in a jacket with pink edging. (We are loving the pops of pink that have cropped up so far at the IIFAs - like Abhishek Bachchan's jacket and Sophie Choudry's Masaba dress.)
Check out the celebrity style and tell us if you'd like to copy some of the looks.
Text and images: Sify.com