LOS CABOS (Mexico): US Secretary of State Hillary Clinton stood out from the crowd during a G20 group photo in which she was the only participant not dressed in a white button-down shirt, reported Yahoo News.

Instead, Clinton arrived wearing one of her usual pantsuits, this one in the color of chartreuse green.

The photo-op was held at the G20 Ministers of Foreign Affairs informal gathering in Los Cabos, Mexico.

Apparently, there was no white shirt requirement in place. The State Department told the Daily Mail that they were not made aware of any formal dress code before the photo op.

Clinton is no stranger to fashion controversy. Ever since she first appeared on the public stage alongside former husband Bill Clinton, the former First Lady's choices in everything from haircuts to pantsuits have been scrutinized by the media.

A 1993 Chicago Tribune article written just after Bill Clinton's first inauguration is entitled, "Hillary's fashion crimes," and contains the following missive:

"Last Wednesday, when she should have been savoring her husband's inauguration, the new First Lady found herself under the withering gaze of the fashion police, who appraised her inaugural outfits and found them wanting."

There have been other articles that were not any kinder. The hat she wore during the swearing-in, said a New York Times story, resembled a blue UFO. Another story reported that some people thought "it made her look like a chipmunk."

Just this month, the National Enquirer openly speculated as to whether Clinton's more recent outfit choices were inspired by a villain from the James Bond film series.

The former First Lady has been the brunt of some unseemly comments from Project Runway host Tim Gunn, who said, 'Why must she dress that way? I think she's confused about her gender. All these big, baggy menswear tailored pantsuits? I'm really serious.' Gunn's comments are especially shocking, considering his own recent confession that he once attempted to commit suicide over his own sexuality. Gunn's comments were labeled "sexist" by the feminist blog Jezebel.