The definitely can. Breasts, ,like any other part of the body (hands, feet, legs, head, ears, nose etc.), should be well proportioned according to the size, build and height of the body. For example Aria Giovanni claims that she had overly large tits when she was in school, however, they are, which by the way are natural, perfect for her rather voluptuous body. Many a skinny pornstars are augmenting their breasts which look like melons hanging to sticks.
Pornstars should never mess with the nature even if it is their own bodies. In most cases natural breasts, although not up to the expectations ingrained by the pop culture of fetishism, are perfect for the bodies they are attached to. When they are artificially grown to the outrageous proportions, one wonders about the ability of their owners to stand without falling face down.
Most of pornstars that are in top ten to fifteen at FreeOnes are those who have augmented their breasts in one way or another. This fetish for overly huge tits was well depicted in brothel scene of Harold & Kumar Escape from Guantanamo Bay when Kumar ignores all the pretty hookers for an ugly one who had breasts of the size of watermelons.
Keep 'em natural ladies!