The M+M's Tour

The M+M's Tour was the sixth concert tour by American recording artist Britney Spears, consisting of six brief shows at clubs in the United States.

Spears expressed interested to tour again as early as February 2006. She started rehearsing for a show at House of Blues venues in secret, and pulled out of a surprise performance on April 25, 2007, at Los Angeles nightclub Forty Deuce. After a marquee reading "The M+M's" at the House of Blues in San Diego, California, appeared in late April 2007, media sources identified the act as Spears, and the show quickly sold out. The tour marked the first time Spears performed live since The Onyx Hotel Tour in June 2004.

The show, which ran 12–16 minutes in length, featured Spears accompanied by four female back-up dancers performing choreographed dance numbers to shortened versions of five songs, including hits such as "...Baby One More Time" and "Toxic". During the performance of one song, a male audience member participated onstage. Spears' vocals during the performance were lip-synched. The shows received mixed reviews from critics and fans. Some said that Spears looked happy and in great shape, while others deemed the show as subpar. Scalpers outside the San Diego venue sold tickets with a face value of $35 for prices between $200 and $500.