'Sniff your armpit and try to twist your head off': Kate Beckinsale shows off taut abs in sizzling snap... before hilariously mocking her sultry pose

She litters her Instagram feed with hilarious jokes.

And Kate Beckinsale was once again in the mood to poke fun as she shared a sizzling behind the scenes shot from her Shape magazine shoot last month - in which she showed off her phenomenal figure in a barely-there getup.

The 43-year-old Underworld star was seen posing with her hands aloft her head while pouting into the distance, a stance she deemed as 'sniffing her armpit and twisting her head off'. 

Scroll down for video

Taut and toned: Kate Beckinsale was once again in the mood to poke fun at herself as she shared a sizzling behind the scenes shot from her Shape magazine shoot last month - in which she showed off her phenomenal figure in a barely-there getup

Kate looked incredible in the snap in which she wore just a white bandeau top with little else, to best show off her fantastic frame. 

Her incredibly taut stomach was envy-inducing as she flaunted rippling abs and her tiny waist, honed by hours of hard work in the gym.

The stunning star's cascading brunette locks fell in a straight style down her back while she held her hands up to push her hair off her face. 

Despite pouting into the distance in the perfect modelling pose, she was determined to poke fun at the pose. 

New attitude: The 43-year-old Underworld star was seen posing with her hands aloft her head while pouting into the distance, a stance she deemed as 'sniffing her armpit and twisting her head off'

She added a caption on the image reading: 'It's Monday morning . Sniff your armpit and then try to twist your own head off who's with me'. 

As Kate sizzled in a bevy of snaps, she gave an accompanying interview to the health magazine about her lifestyle and her body. She said she steers clear of alcohol and has never had an entire glass of anything alcoholic.

'I don't drink alcohol,' she told the publication, 'I feel [its effects] very quickly, so I've never actually had an entire glass of anything alcoholic.'

Teetotal: In her interview, she said she steers clear of alcohol and has never had an entire glass of anything alcoholic

The Love & Friendship star revealed the secrets of her enviable figure, which include five or six punishing works outs a week with a personal trainer ahead filming the fifth installment of Underworld franchise, Blood Wars.

She explained she would rather exercise first thing: 'I basically wake up, eat breakfast, and then work out. I prefer to get it done in the morning.

'That said I don't naturally get up early. It would be much better for me if the entire world went to bed at 4 am and woke up at noon. But it doesn't, so I'm usually staggering around first thing.'

The SAG Award nominee said she has learned to appreciate breaking into a sweat during her hardcore workout regime.

'Hard-core workouts have really made a big difference in my life. I have a lot of internal energy, and intense exercise helps me channel that energy.

'I find balance by doing a workout that makes me pour sweat. I never was that girl before, but I am now,' she told the magazine.

The mother-of-one explained how she stays in shape by changing up her exercise pattern.

Tricks of the trade: The Love & Friendship star revealed the secrets of her enviable figure, which include five or six punishing works outs a week with a personal trainer ahead filming the fifth installment of Underworld franchise, Blood Wars 

'I do circuit training interspersed with brutal cardio, such as crazy things on a nonmotorized treadmill. That part is torture. But the thing I like about circuit training is that you're never doing one thing for very long.

'You get to the point where you almost can't bear it, and it changes to something else.'

Kate - born Kathrin - shares daughter Lily with her ex-partner Michael Sheen - and they will celebrate her 18th birthday next month. 

Glowing: Kate - born Kathrin - shares daughter Lily with her ex-partner Michael Sheen - and they will celebrate her 18th birthday next month

The comments below have not been moderated.

The views expressed in the contents above are those of our users and do not necessarily reflect the views of MailOnline.

By posting your comment you agree to our house rules.

Who is this week's top commenter? Find out now