The busty blonde model is glowing and her cute little baby bump is just beginning to show in these Las Vegas poolside pictures taken on Wednesday.
The burlesque dancer's figure is still enviably trim and toned as she is snapped happily cradling her burgeoning bump in a white and red gingham bandeau and shorts combo bikini.
Glowing: Pregnant Holly Madison cradles her baby bump by a Las Vegas pool on Wednsday
In one picture the 32-year-old star of the Vegas-based revue Peepshow smiles serenely for the camera with an adoring dog by her side.
This is Holly's first child with her boyfriend of more than a year Electric Daisy Carnival founder Pasquale Rotella, 38, and the Girls Next Door cast member has said she had 'always wanted to be a mom'.
Expectant: The former Playmate looks serene is a red and white gingham bikini
Trim: Despite being around four months pregnant Holly still retains her toned dancer's figure
The baby is said to be due around March next year but Holly, one time 'girlfriend' of Hugh Hefner, told Us magazine that she is determined not to let herself pile on the pounds.
She said: 'I'm trying to work out every day and be healthy.
Finding the perfect pumpkin: Holly was seen getting ready for Halloween at a West Hollywood pumpkin patch on Thursday
Maternity chic: The star was looking stylish in knitwear which clung to her blossoming bump
'I don't want to let myself go, then have a tough time getting back in shape.
However the buxom beauty does allow herself the odd treat and admitted that her weakness l is chips.
She added: 'But my downfall is french fries. My excuse is they settle my stomach!'
Glamour: Holly is seen in a tiny shorts and vest as part of the world's largest tbikini parade in Vegas in May