Sienna Miller is taking pills to make a bigger bustline.

Sienna Miller, who just finished filming 'The Factory Girl' in New York, had dropped 5lbs for the role, and her boobs disappeared.

Now Miller is popping a boob-enhancer herbal concoction, which contain fenugreek, yam root, kelp and fennel seed, that promise to enhance your breast size.

She dreams about having breasts and curves again!
Source: femalefirst