The 31-year-old glamour model bared almost everything as she posed in the mirror for an eye-popping selfie, wearing nothing but a pair of white lace knickers.
Pouting for the camera, the blonde bombshell covered her ample assets with her arms as they threatened to spill out of her strategic hold, exposing plenty of underboob for her 232,000 followers.
Rhian flaunted her pert posterior and slender figure in the sexy snap, with her golden tresses falling in loose waves over her shoulders.
“Christmas belly imminent,” she captioned the sizzling upload. “Remind me not to binge every day before I have a shoot. OOPS.
“Definitely not pregnant,” she quipped. “Just getting cosy for Christmas.”
Her fans went wild for the topless shot, with one commenting: “Looking so hot.”
“Still gorgeous,” another added, while a third praised: “Beautiful.”
Rhian recently set pulses racing when she stripped completely naked for a sensational calendar shoot.
The busty beauty teased a glimpse of her famous assets as she flaunted her peachy bottom, posing nude against a brick wall.
She elongated her shape pins with a pair of scarlet satin stilettos and accessorised with black bunny ears on top of her head.