Rihanna will replace Megan Fox as the global face of Emporio Armani underwear and Armani Jeans. Fox's deal with Armani was announced in October of 2009, and her first ads appeared in January of 2010. She was said to have commanded a $2 million fee; there's no word yet on what Rihanna, who was previously a face of Gucci

In Megan Fox's new Armani commercial, a waiter brings her room service, then ogles her as she gets dressed. The plot is pretty uninspired, but the range of emotion Fox displays while writhing into her jeans is truly Katharine Hepburn-esque.

• Megan Fox may have been replaced by an underwear model in the next Transformers movie, but she plays one pretty well in this latest campaign for Armani Exchange. Trading places is all the rage for fall. [Fox]