VIDEO: Bar Refaeli channels Anna Kournikova, plays tennis in her underwear

We've often marvelled at the quite astonishing body of Bar Refaeli (she stars in many an underwear ad, you know) and this morning we're at it again. The supermodel gets sporting for her latest advert, playing tennis in nothing but her smalls...

Cue lots of concentrated facial expressions, limbering, stretching, pacing of the court, and close-ups of her extraordinarily pert derriere.

It's all a bit too much for us to handle on a quite average Tuesday in the office.

The ad is in promotion of the 26-year-old's debut underwear range, under.me - a collection of "beautifully made basics that look good and feel amazing," according to Bar.

Well, she certainly makes them look good - but then the supermodel body probably helps.

Shop the collection online now at under.me.

She's also the face of Passionata, check out Bar modelling the latest collection below:

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