Fergie is showing off her lovely lady lumps.
The sexy Black Eyed Peas singer spent the holiday weekend in Cancun, where she proudly posed in a striped bikini in a photo she posted on Facebook.
She looks amazing ... but, unfortunately, the 37-year-old's sexy husband Josh Duhamel didn't follow suit and share a shirtless pic too. Maybe next time!
See what other stars did for Memorial Day here -- and check out more hot shots of Fergie Ferg in the gallery above!