Eva Longoria revealed more than she intended on “The Late Show with David Letterman” Wednesday.

Namely, her left nipple.

The 36-year old ‘Desperate Housewives’ star was on the show to promote her new cookbook, “Eva’s Kitchen.” But let’s face it, from the moment the svelte brunette tottered on stage in ultra-high heels, clad in a revealing tailored jacket and matching bootie hugging shorts, no one cared about her guacamole.

All eyes – including Letterman’s – were fixed firmly on her barely-there cleavage and the left breast that was trying hard to make an appearance.

By the way she fidgeted through the first half of the interview, I think she had an inkling a wardrobe malfunction was imminent. There were several moments when the left one almost popped out and then –POW – there it was. Nipple.

Letterman ogled for a minute before cluing her in. She tried to laugh it off as she quickly fixed her lapel.

“Oh my button! I’m sorry … but you didn’t see anything,” she said.

Ummm, yeah we did.