The Girls Aloud star – famed for her ginger locks – admits beau Charlie Fennell has given her the affectionate nickname and often calls her it when he doesn't agree with her quirky outfit choices.
Speaking at a party for luxurious footwear designer Gianmarco Lorenzi at his London store, Nicola told BANG Showbiz: "I'll wear things my boyfriend doesn't like because I like to be a bit out there. And he's just like, 'Come on Ginge get that off' – he's not afraid to let me know what he thinks!"
Although Charlie isn't a fan, Nicola is becoming a bit of a fashionista and is winning rave reviews for her ensembles but she admits she doesn't follow any fashion rules.
She said: "Sometimes I want to be feminine and other times I want to be a rock chick. I don't like to spend too long getting ready otherwise I drive myself mad. My style icon is Madonna because she wore things that weren't necessarily fashion like a bra outside a top."
Another style icon of Nicola's is a bit closer to home – her Girls Aloud bandmate Cheryl Cole.
When asked who was the best dressed member of the group, Nicola replied: "Oh Cheryl, definitely. She always looks great."