Cansei de Ser Sexy (better known as CSS) is a Brazilian band from São Paulo. Their songs have an electro-rock/New Wave sound, and are sung in both English and Portuguese; their lyrics mostly concern pop culture.

CSS formed in September 2003, consisting of a group of friends. Their name was taken from a reported quote by Beyoncé, who allegedly declared that she was "tired of being sexy".

The band first became known through the internet.

In 2005 they signed with the Trama Virtual label (the first, and to this day the second only band to), and in October their first album was released in Brazil, along with an 7-track EP that was sold at concerts. A limited edition version of the album had a CD-R included, so that the buyer could burn a copy of the album onto the CD-R to give to someone else as a gift. In Brazil the album has reportedly sold 5,000 copies to date, but neither the album nor the singles have reached charts. Two music videos were also released: "Off The Hook" and "Alala". "Off the Hook" was directed by guitar player Ana Rezende, and filmed at the home of band members Carolina Parra and Adriano Cintra, where CSS recorded most of their songs.

At the beginning of 2006, CSS signed with Sub Pop to release their international debut album. The first single, released in June 6, was "Let's Make Love and Listen to Death From Above", with an accompanying video directed by Cat Solen.

They played on the NME Indie Rave Tour, along with The Sunshine Underground, New Young Pony Club and headliners Klaxons, and in the Coachella Festival in 2007.

CSS played various Festivals across Europe in the summer of 2007, including Hovefestivalen in Norway, Summer Sonic in Makuhari Messe, Japan and a packed-out high-profile slot on the Radio One/NME Stage at Reading and Leeds Festivals in England. They are opening for Gwen Stefani on the European leg of her The Sweet Escape Tour in late 2007, and playing at the Trinity Ball in Dublin, 2007.

.www.csshurts.com