Kim Kardashian is having a 'booty room' installed in her new house.

The 'Keeping Up with the Kardashians' star - who has 11-month-old daughter North with husband Kanye West - has filled the area with equipment dedicated to keeping her famous butt toned and has even hired a trainer just to work on her derriere.

A source told Britain's Grazia magazine: ''The room will have butt-toning gym equipment, including the ProForm Booty Firm, the Yukon Fitness Butt and Thigh Shaper, the Suzanne Somers Buttmaster and a range of butt-toning belts and resistance bands.

''There's also a dedicated cellulite-busting area with a laser machine, and a 'bum spa', which will be a pampering and treatment area for her bottom.

''She's even hired a 'butt expert' in addition to her personal trainer, who'll be responsible for her workout every day.''

It was recently revealed Kim and Kanye had spent $750,000 on a 'glam room' for the brunette beauty in their new home.

The staggeringly-priced make-up room comes equipped with a ''glam bath'' that she can access through metal doors from her master closet and will have her hair and make-up teams on standby at all times.