The Black Eyed Peas star, who married Duhamel in 2009, revealed that she would like her husband to "keep" his mohawk.
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"He's definitely my North Dakota husband, but then he got that mohawk for [the movie] Scenic Route," People quotes Fergie as saying. "He got that rock 'n' roll look and I was very turned on."
Fergie also revealed that she has been able to spend more time with Duhamel recently, saying: "I'm nurturing my relationship with my family, getting to see them more."
Fergie was recently linked to a role as a judge on the upcoming season of The X Factor USA.
However, she has denied the reports, saying: "It's not the right time."
