The former Pussycat Dolls star loves every aspect of the 1970s fashion and music movement, and is a particular fan of legendry designer Vivienne Westwood.
She sad: “When I was in the Pussycat Dolls, I was always the punk doll, so I love the whole look that Vivienne helped create.
“I’m really interested in the punk movement and have learned all about Vivienne and her shop, Sex, in the 70s.”
The ‘Dont Cha’ singer also admitted she is obsessed with pens and is incredibly “fussy” about the writing implements she uses.
She explained: “I know it sounds silly, but I’m really fussy about what pen I use when I write! Pentel pens are the best – it’s something to do with the way they feel and the way the ink flows. I always have at least three or four on me.”