January Jones' appearance in GQ has been making headlines for her comments regarding ex-boyfriend Ashton Kutcher, and for the welcome revelation there's a killer cleavage under those conservative 1950s outfits. Or is there?

Insiders have suggested the gorgeous Mad Men actress may have received a little digital enhancement in the chest region in the stunning set of pictures, one of which graces the cover.

“They definitely did some significant retouching,” a source tells the New York Post.

“It’s just par for the course these days with cover shoots.”

January keeps her curves underwraps for her Golden Globe-nominated role in TV drama 'Mad Men'

But GQ has defended January's bountiful curves, insisting they are all her own.

In a blog post on the magazine's website entitled 'Yes, They're Real. And They're Spectacular', Director of Photography Dora Samosi writes:

"Terry (Richardson, photographer) likes to work with harder lighting, and that can create a stronger shadow - that, and body position and perspective could give the illusion that her breasts are bigger...Terry Richardson prides himself on unretouched pictures, and we only hire photographers who operate that way. We like a natural look- there's very minimal retouching."

January looking ample in GQ (left, Terry Richardson/GQ) and on the red carpet earlier this year (right, Splash News)

He finishes with: “January Jones needed no help. Trust me.”

What do you think?

Movie poster enhancements