Aubrey O'Day is holding up after she was robbed Wednesday in Los Angeles, her rep tells

According to, the singer, 25, was walking down an alley on her way to tape a TV Guide segment when someone ran behind her and stole everything she was holding -- including an pricey Zac Posen dress. (Luckily, her beloved teacup Maltese named Ginger escaped unharmed, the website reports.)

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"Aubrey is doing well," her rep tells Us. "She is just a bit shaken up from the day's chaos and is grateful that she and those around her were unharmed."

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No arrests have been made.