Our fave celebs donned their failsafe denim pieces and struck a pose for the charity campaign shoot in a bid to raise money and generate awareness of genetic disorders affecting children in the UK.
In the stylish snaps, Mossy wore her two-tone tee off the shoulder and teamed it with a slicked back 'do for an extra edge.
MIC's Lucy and Louise are fresh faced beauties in their campaign shots in which they totally nail off-duty style.
Featuring an original, hand-drawn design courtesy of the Edinburgh College of Art Illustration, the monochrome tee has also been snapped up by TOWIE's Sam and Billie Faiers, Emma Bunton and even Olly Murs as a summer wardrobe staple.
So on Friday 18th September, we'll digging out our trademark skinnies and joining the long line of celebs to support the cause that helps a staggering 30,000 babies and children who are diagnosed each year.
It's the perfect excuse to dress down.
For a purse friendly £20 you can channel the stars and do your bit for charity all at the same time - what's not to love?
The official Jeans for Genes Day limited edition 2015 T-Shirt is available NOW via the online shop www.jeansforgenesday.org/shop - race ya!