She said: "I was mistaken for Sarah Harding quite often when I was blonde.
"I love Girls Aloud. I'll never forget watching one of their videos when I was over here in England with the Dolls - it's like a video full of models."
She added: "Fergie's got a banging body - she's got a booty, she's got boobs and she has a tight little stomach.
"When we performed with her, she had a corset on and little shorts and I was pretty amazed by her body."
However, the star isn't a fan of everyone she has worked with, admitting rapper Ludacris infuriated all of the Pussycat Dolls with his dismissive attitude.
She explained: "I'd hate to call anybody out but Ludacris is the rudest celebrity I've met. We were working with him and he didn't give us the time of day. It was like we were his backing dancers."