First she took to Twitter to show off her enviable bikini body. Then she took to the stage at the Sunday's Grammy Awards with what seemed to be an entire Zumba class backing her up. Now, Rihanna fans have a little more insight on what keeps the singer fit and fabulous.

Her secret weapon? Trainer and co-host ABC's lifestyle makeover show "The

www.telegraph.co.uk:

When it emerged that Ms. Middleton regarded Pilates lessons as "something of a weekly necessity," her teacher, Margot Campbell, was besieged by journalists and publishers waving large cheques, desperate to know how she had single-handedly sculpted the "rear of the year."

Read the whole story: www.telegraph.co.uk