Looking at her you would never be able to guess that MATTHEW MCCONAUGHEY'S model girlfriend CAMILA ALVES gave birth just 17 DAYS ago.

The new mum looked radiant as she shopped in Hollywood at the weekend with absolutely no sign of a post-pregnancy bulge.

Camila gave birth to the couple's first child, LEVI, just over two weeks ago but like most of the Hollywood women-folk, Camila looks like she's never even been pregnant.

In fact just three weeks ago the model was spotted with a giant bump, just days before her baby son was born.

We just have one question. What's the secret?