The actress, who made her first appearance as the character in 1997, revealed her attitude in an interview with The Mirror.
When asked whether she minded some of the less glamorous aspects of her role on the show, Danson replied: "I put my vanity to one side when playing Leanne.
"I know that as long as my acting is up to scratch that's all I'm bothered about."
Despite this, the 32-year-old also admitted that she would change her appearance if given the option, saying: "I'd definitely like a change of wardrobe. She has let herself down a little bit - as people keep telling me."
Leanne is currently in the middle of a love triangle between estranged husband Peter Barlow and ex-husband Nick Tilsley.
When asked who she would prefer to end up with, Danson replied: "If it came down to pure love, which I think it should, then she ought to be with Peter.
"He is the love of her life. But I have no idea how it will play out."