The unidentified friend said the sudden increased puffiness of the "Rumor Has It" actress' lips indicates she may have had medical assistance to help her maintain the beauty that made her a hit in numerous Hollywood films, The Daily Mail said Friday.

"It seems obvious she had some work done," the friend said.

A friend told the British magazine that the actress has been concerned regarding her ongoing relationship with singer John Mayer due to her advancing age.

"There's a lot of pressure on Jennifer dating John," the friend said of the 39-year-old actress and the 31-year-old rocker. "Every other girlfriend he has had has been ten years younger than Jen, and she's very competitive about keeping up."