The actress and model currently lives in sunny Los Angeles where she's filming sitcom One Big Happy but she's been visiting the UK this week.
Kelly was snapped on Thursday morning (2 April) outside a London hotel looking very happy indeed in a pair of faded jeans and matching shirt knotted at the waist.
She's not the only one who has been rocking double denim lately: earlier this week we spied Kylie Jenner in a denim pencil skirt / shirt combo while out shopping in Hollywood.
Reveal's deputy fashion ed Aja Wallis says: "This is still a big trend this year. Usually the rule is to make sure your denims are different colours – but by knotting her shirt and flashing her toned midriff she's cleverly sidestepped the golden rule and manages to pull off double snow wash denim! Along with her big hair, gold hoops and box-fresh trainers, she looks like an 80s throwback – but somehow it works!"
Our favourite double denim picture of all time, however, is that classic Britney Spears and Justin Timberlake moment at the 2001 American Music Awards.
Any excuse to show this picture, right?!
For exclusive competitions and amazing prizes visit Reveal's Facebook page NOW!