Trey Songz

Remember when the thing to do on the red carpet was lift up your tee and show off your Calvins? Well the CK waistband is back, as Calvin Klein launched the newest Instagram campaign around its famous underwear.

Leandra Medine – The Man Repeller

The “Show Yours” initiative has famous faces like Leandra Medine, Lara Stone, Fergie, Poppy Delevingne, Hanneli Mustaparta and singer Trey Songz posting selfies in their undies tagged with the hashtag #mycalvins.

Miranda Kerr

So far we have Miranda Kerr doing her best Kate Moss, lying with unbottoned jeans and a tied up t-shirt with her white Calvins riding high. While The Man Repeller styles hers with boyfriends and an unbuttoned cargo shirt. To go alongside the campaign, Calvin Klein is calling us to flash our own Calvins. Gulp. But it looks like Miranda’s 3.3 million fans are listening. In case you want to see the, err, pants out there – Calvin Klein Underwear are then posting the ‘pant selfies’ on their designated #MyCalvins page.

Chiara Ferragni – The Blonde Salad

The Calvin waistband was the label to flash back in the 80s and 90s, as baggy jeans were nothing without a side of CK. I thought that the baggy jeans and boxers look would stay in the 90s – especially since the look got a big ‘ew, as if!’ from Cher Horowitz in Clueless. But it seems like Calvin Klein Underwear is on a mission to lower our jeans waistbands.

So what do you think of the trend? Are you ready to go all Marky Mark and flash your Calvins?