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"I can't even breath right my now im crying so hard i just lost 1 of my best friends. I love you forever Amy & will never forget the real you!," Kelly Osbourne wrote on Twitter, referring to British singer Amy Winehouse, who was found dead in her London home on Saturday, July 23.
(Pictured: Kelly Osbourne poses in Madonna and her daughter Lola's Material Girl's spring 2011 collection.)
(Photo courtesy of Material Girl/Brooke Nipar)