Brit’s site confirms “Ellen” appearances, MTV takeover day and more leading up to Femme Fatale release. By Jocelyn Vena Britney Spears Photo: Jive Britney Spears has become a very busy lady in the lead-up to the March 29 release of Femme Fatale. After rumors came out on Wednesday that Spears would make several appearances on “The Ellen DeGeneres Show,” the week her album drops, a press release posted on her website now confirms that and a few other engagements on Brit’s calendar. The release also confirms that Spears will pre-tape her “Good Morning America” appearance on March 27, two days before it airs on the show. MTV will dedicate March 29 to the femme fatale herself for what is being dubbed a “Britney take-over” day on the network. Additionally, Spears will make an appearance on the Kids’ Choice Awards on April 2, though there is no word on whether she’ll be performing, presenting or just getting slimed. Spears is currently rehearsing for her appearances and working on the video for her second single, “Till the World Ends.” It will be directed by Norwegian director and photographer Ray Kay, who has worked with Lady Gaga, the Backstreet Boys, Beyonc