Madonna insists she is not — repeat, not — pregnant! The Material mother-of-two plans to file a formal complaint in Britain over a story in Heat magazine that said she is pregnant with her third child. "She dyed her hair brown instead of blond; that does not confirm somebody's pregnant," her rep told Reuters. "And she's been wearing baggy clothes for 20 years, so what else is new?" Um, I just got a new microwave oven, does that count?