A sports bra could make her feel flat chested and embarrassed even, but she doesn't have much to fill out to begin with, (which I'm guessing is the case at 11.) Would you let her wear a micro mini skirt or a cleavage showing shirt at 11?? I think a padded Bra is kinda on the same page of trying to dress in a more sexual way at too young of an age. She doesn't need anyone looking at those things, so no need to make them look bigger. I'd search more places for bras. I'm sure if you look hard enough, you can find one that's cute enough for her, and age appropriate. If all else fails, check online