Join Date: Aug 2006
Location: Barcelona, Spain
For most women in their late 40s, wearing a purple leotard and matching stilettos would be more than a little unforgiving on the figure.
Not, however, if your name is Madonna.
Striding across the stage on the first London date of her tour, the 47-year-old singer's revealing outfit only highlighted her incredibly toned body.
But while attention in the past has focused on her muscly forearms, this time, it was another part of her anatomy that had the crowd transfixed.
Gyrating her body during one particularly hectic number, her perfectly toned derriere drew astonished gasps from the thousands of Madonna fans packed into Wembley Arena.
Without an inch of fat - or heaven forbid, cellulite - the singer's punishing exercise regime to prepare for the rigours of touring was clearly paying off.
This has included spending up to three hours a day in the gym, extensive yoga and pilates sessions, not to mention gruelling weight training exercises.
Gyrotonic Expansion System
She is also a fan of the Gyrotonic Expansion System, in which the singer's body is stretched and manipulated into shape to achieve optimum muscle definition.
On close inspection, Madonna also appeared to be sporting a figure-hugging pair of tights underneath her leotard, which were bizarrely cut-off at the knee.
The somewhat strange accessory helped make her legs look even muscle-ripped than normal, with her thighs looking incredibly taut and firm.
It is no wonder that Madonna needs to stay in shape.
Stretching over two hours, her show involves seven costume changes, more than 21 energetic numbers, not to mention hauling herself up and down a number of large stage props, including a massive crucifix.
Her gruelling exercise regime - and limb-twisting gyrations - have not however been without criticism.
It was suggested that her fitness routine was responsible for her developing a hernia, in which she had to have an operation in February.
She has eight London dates in total, before embarking on the rest of her European tour, including gigs in Germany, France and Denmark.