Jessica Simpson put on quite a cheeky display as she celebrated her milestone day.
The former pop princess took to her Instagram on Monday to commemorate her 37th birthday with a very racy snap.
She could be seen laying out topless on a green pool float with her pert derriere lifted up in the air.
The blonde bombshell captioned the racy snap: ‘Kiss My Butt 36.’
RUMOR BUS 