New York, Dec 13 : Rumours are abuzz that Gwyneth Paltrow has had breast augmentation surgery.

The rumour emerged after the actress flaunted her cleavage on the cover of Gotham magazine.

"She didn''t use to have anything up top. Now she does, and they are perky," the New York Post quoted an expert, as saying.

In "Two Lovers," Paltrow's upcoming movie with Joaquin Phoenix, the actress has flashed one of her breasts.

A fan who''s seen it said: "It''s like the boob of a 15-year-old girl."

Paltrow''s representatives did not comment on the issue. (ANI)