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What a vision in white! With a little splash of pink lipstick. Loves.

Kelly O strutted her stuff down Robertson in Beverly Hills this afternoon, showing off a chic outfit and a Marilyn Monroe-inspired hairdo. The blonde is turning into a true fashionista!

Osbourne was recently named the new face of Madonna's Material Girl Collection, replacing Taylor Momsen. Kelly Tweeted at the time, "i cant wait to tell everyone about what i did yesterday! but they made me sign a confidentiality contract :("

And why did the 26-year-old have to sign an extensive confidentiality agreement? According to the Daily Mail, it's because Momsen told Spin her style was that of a "high-class hooker" and Madonna was pissed.

"Madonna doesn't want any repeat episodes," a source tells Daily Mail. Poor Kel - does this mean she'll have to watch what she says from now on? And won't that conflict with her hosting job on Fashion Police?