Dayum, that derrière!

Jessica Simpson turned 37 on Monday — and wanted all her followers to know with a topless selfie!

Related: Jess Throws A Great Moana-Themed Party!

She posted the (above) pic on Instagram and captioned it:

“Kiss My Butt 36”


Pals Adrienne Sands and CaCee Cobb also joined Jess for a bday dinner that evening:

The Starry NightA post shared by Jessica Simpson (@jessicasimpson) on Jul 10, 2017 at 10:25pm PDT

HDB, woman!

[Image via Instagram.]

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Jessica Simpson Is 37 & Wants Everyone To Kiss Her Perfectly Perky Ass!