See, I looked at that same picture and thought they were real.
Tracy...we're going to need a woman's ruling on this.
Naturals do not look that way when she's flat on her back. Notice how they look kinda like clay, and squarish. Also, look at her muscle tone. With such a low percent body fat, it is highly unlikely that the adipose tissue necessary for naturals would have been retained in the breast.
Additionally, the Sacramento Kings paint-on jersey shot reinforces my view. Notice how the nipple is pointed upwards, with a large amount of rounded tissue underneath. That screams fake as well. They're just too stiff.