After welcoming their baby daughter Florence in August of last year, Samantha Cameron has got back into shape in record time.
To help maintain her fit and trim look, the busy mum has hired a personal trainer to provide that extra push.
Matt Roberts, who boasts such celebrity clients as Naomi Campbell, Amanda Holden, Tom Ford and Mel C, was also the fitness guru of choice for husband David when he decided to get back into shape last summer.
Keeping up with her trainer on their jog through St. James's Park wasn't always easy.
The new mum later opted to slow it down and eventually walk the rest of the way home.