There's been some criticism of Britney Spears for letting herself 'chillax' a little too much on the diet front before starting her Vegas show. She was looking a little full-bodied. She's back in L.A. now hardcore training during her Vegas show break. Based on how she's looking in her stretch pants today, I'd say she's on the upswing of her down under.
Check out today's look at Britney Spears booty in sheer stretch pants on WWTDD.