Singer Jessica Simpson celebrated her husband Eric Johnsons 38th birthday by posting a buttock-baring photo on her Instagram account.

On Sunday night, Simpson, 37, shared a picture of herself with her husband.

In the photo, Simpson's husband can be seen double-fisting two pints of foamy beer as she is bent over in front of him, flashing her undergarments to the camera, reports people.com.

"38 IS GREAT," Simpson captioned the photo, adding the suggestive hashtag, "#IAMSOHOTFORYOU"

https://www.instagram.com/p/BZKKkvNAp_l/?taken-by=jessicasimpson