When Kate Middleton showed up at the wedding of the year in a dress she’s worn before (when she wasn’t pregnant) a mere 26 days after giving birth to Prince Louis you could hear the collective shudder from the other new mums still knee deep into dry shampoo, milk stained t-shirts and elastic waistbands less than four weeks post partum.

Which by the way is very normal. However, Kate is just one of a long line of celebrities who make bouncing back after baby an Olympic level sport.

But A-listers like Kate have a lot of help –secret weapons in the fight to regain their looks.