Kelly Osbourne pulled a fashion faux par last night when she walked down the red carpet with sweat patches. The TV star had pulled out all the stops by donning a bright red figure-hugging dress at the launch of E! Entertainment in Munich, Germany, but on closer inspection Kelly had damp armpits.

The 26-year-old blonde was mortified by her unplanned perspiration afterwards and blamed heat lamps for her unsightly sweat.

"Pulled a fashion no no last night i had sweat marks because there we heat lamps on the red carpet! #eww (sic)" she wrote on her Twitter page.