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Whitney Houston's ex-husband Bobby Brown struck back at claims he was responsible for getting the pop star hooked on drugs or that he somehow played a role in her cocaine-fueled death. Brown appeared on U.S. morning show, "Today," saying drugs were a big part of Houston's life before he even met her in 1991. He also said he's been off of drugs for seven years and was hurt to discover that Houston was still using. A fire broke out at Tyler Perry's studio outside of Atlanta. More than 100 firefighters responded to the blaze at the 60 acre studio complex. Perry was at the complex during the fire, but no one was injured, and damage was kept to a minimum. British X "Factor" judge and singer Tulisa Contostavlos has topped FHM's 100 Sexiest Women in the World poll. The 23-year-old star arrived at the magazine's party in London. She edged out singer Cheryl Cole for the top spot. Finally, Scarlett Johansson received the 2,470th star on the Hollywood Walk of Fame. The actress has been nominated for a Golden Globe four times and won a Tony for her work on Broadway in "A View from a Bridge." She currently stars as Black Widow in "The Avengers," which opens on May 04. Bob Mezan, Reuters.