Guerra’s first national exposure came when she appeared in a lingerie spread for FHM in December 2002. The magazine later reported that following its publication, almost one third of their mail was from readers demanding more photos of her. She was called back for more photo shoots and became “FHM’s Model of the Year” in 2004. Since then, she has been featured in many magazines, including DUB, Smooth, Escape, and Open Your Eyes, often as the cover girl.

In April 2005, Guerra’s camera phone was allegedly hacked. Dozens of photos, including nude pictures, were widely disseminated on the Internet. Guerra said the nude images were of another woman, and that they had been mixed with genuine, non-nude camera-phone images of her to create the false appearance that she was the naked woman pictured.

The July 2006 issue of Playboy featured the first formal nude photos of Guerra. Part of her motivation for posing for the magazine, she said, was the camera phone incident; she wanted people to see what she really looked like naked.

The first song from Guerra’s debut album, “You Got Me”, was leaked to the Internet on November 2, 2006.

Guerra is a vegetarian. Regarding vegetarianism, she has stated “I feel really healthy, and it works on so many different levels, including the condition of my skin”. In 2011, she appeared nude in a campaign for PETA, in support of vegetarianism.