She was spotted yesterday indulging in a calorie-laden fast food snack at Wendy's burger chain.
But Kim made sure to limit the damage today as she headed to the gym near her Los Angeles home.
The 31-year-old reality show star showed off her curvy figure in a clinging black gym vest and leggings over a neon yellow sports bra.
Working it off: Kim Kardashian was bright and early to the gym today as she sought to work off yesterday's Wendy's snack
She tied her long dark hair up in a loose ponytail and wore oversized aviator sunglasses while clutching her Blackberry.
The reality show star looked extremely focussed on the task in hand, striding towards the gym.
Ready, set go! Kim looked focussed on her workout, perhaps determined to work off the extra Wendy's calories
Striding out: A determined Kim wasted no time getting to her workout
Covering up: Kim hid her curvy figure underneath her oversized cream fringed Chanel bag
Kim recently admitted she is working out up to six times a week to keep her famous figure in shape.
She also tweeted that along with her workout regime, she has been changing her diet for the better.
Communicator: Kim's Blackberry was never far from her hand both before and after her workout session
On a mission: Kim tweeted about her need to burn some calories on her Twitter page this morning
Kim wrote via Twitter: 'I've been trying to change my bad eating habits - slow process but its working. I feel so much better! Sugar, dairy & gluten free. HARD!'
She added: 'I will have sweets every once in a while & dairy but this is a huge step for me! Its a lifestyle change but I'm loving it so far!'
Despite this, the glamorous star seemed to be looking forward to her Wendy's fast food, which she bought at the Dominican Republic airport yesterday.
Burger and fries: Kim treated herself to a Wendy's at the airport yesterday as she and her family prepared to jet out of the Dominican Republic
She then strolled through the airport brandishing the bags of food, joined by her younger brother Rob and sister Kourtney's boyfriend Scott Disick.
Kim looked ultra glamorous in a flowing pale pink midi-dress which she teamed with a belt and cream jacket.
With her full make-up, she cut a glamorous figure with her long dark hair in a pretty braided style.
Getting saucy: Kim helped herself to some ketchup after ordering her snack
Soda pop: The glamorous TV star ordered a few soft drinks for her travel companions
You want fries with that? Kim is joined by her family including stepfather Bruce Jenner at the fast food counter
She wrote: 'Fun times in the Dominican Republic with the whole family!'
Kim also used her Twitter account to hint at another family first - a music video.
She wrote: 'U better believe the whole family shot a new music video while in the Dominican!!! Its our new family tradition! Can't wait to share it soon.'