Sienna and Rhys seem to be inseparable these days, from their strolls around London to their Mexican vacation, and this week so far has been no different with trips to the Chanel boutique and the grocery store. While the day-to-day is covered, they're rumored to have a new project on the horizon: a duet. Even though Sienna's musical background is limited to dating rock stars, Rhys was actually a founding member of the Welsh band the Super Furry Animals. Some say this may be just another way Sienna is copying Kate Moss, but apparently singing coupled duets is the latest trend. While we're not seeing them as the next Heidi and Seal just yet, it should be an interesting project to keep an eye on.
To see more of Sienna and Rhys out and about in London just