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LeAnn Rimes is used to some competition on the music charts.
But she and her hubby's ex-wife might be going head to head on The New York Times best-sellers list.
Seems both LeAnn and actor Eddie Cibrian's ex-wife, Brandi Glanville from The Real Housewives of Beverly Hills, will be putting out memoirs, E! Online reports .
LeAnn "wants it to be a very honest book so she can speak directly to her fans and tell her side of the story," a "publishing source" tells E!.
"She's been through a lot of changes over the past few years and this is her chance to speak candidly to her fans," the source says.
As for Brandi, she has tweeted that she's doing a book "about surviving divorce."
It's way too early to have a publishing date for either book, but a few media outlets have predicted both likely will be best sellers.