After all, the underwear model looks as if she is about to strip down to the silky bra which can be spotted peeking out from under her vest top.
A leaked preview of the new Super Bowl advert for the Mercedes-Benz CLA sees a teasing Kate pretending she is about to recreate Jessica Simpson's famous Dukes Of Hazzard car washing scene.
What a tease! Kate Upton pretends she's about to wash the All-New Mercedes-Benz CLA in a newly leaked Super Bowl advert
Saucy: The blonde is seen grabbing a handful of suds, then blowing them at the camera
Kate then strolls nonchalantly towards the luxury vehicle, apparently preparing to get her hands dirty washing the car.
She smiles seductively as she approaches.
What a tease! Kate shows off her curves in a black vest as she poses in the commercial
Look at me! As she flipped her hair and showed off her bra, Kate's fans could have been forgiven for thinking she was about to strip off to wash the car
Beauty: But this is as much of Kate's curves as viewers will see
Sadly for her fans she's just teasing - with a group of football stars instead doing the hard work.
Instead of joining in Kate simply walks up to the vehicle, points at the bonnet and states: 'You've missed a spot.'
Here she comes: The football team cleaning her Mercedes-Benz CLA look on with delight as Kate approaches
You missed a spot! Kate talks to a tongue tied young footballer
Off she goes: Work comes to a halt as Kate strolls away