Today, Aishwarya Rai [Images] smiled.

Okay, she probably does that everyday, but it isn't often that we mortals get to see her pearly whites -- at least when it isn't Cannes [Images] season.

And diamonds seem a good motive for smiling, eh?

The actress, brand ambassador for the Diamond Trading Corporation's Nakshatra collection, unveiled a new collection of jewellery at a press conference in Mumbai on Tuesday.

The new collection is inspired by the stars, by the 'cosmic constellation.'

As for the actress, she can next be seen in theatres on October 20, with Umrao Jaan.

Photograph: Indranil Mukherjee/AFP/Getty Images