One of actress Shailene Woodley's most prized possessions is a membership card for discount store CostCo - because it helps her buy her favorite bread when she's traveling around America.

The Divergent star has very simple tastes when she's traveling to promote movies or on location - and she always makes sure she knows where her nearest CostCo is.

She explains, "I have a CostCo card... I'm on my mum's account... There's a few things (I get there) - there's a bread at CostCo that they don't sell anywhere else... It's made of honey and seeds and I don't know the name of it, but you can only get it at CostCo.

"No matter where I am, I can get my CostCo bread."