Cherry is expecting her second child with her husband Roly and yesterday (4 September) dressed her growing tummy in a T-shirt supporting the charity.
The TV presenter, who gave birth to her daughter Coco in the BBC3 documentary Cherry Has A Baby, teamed her navy blue top with a pair of comfy black shorts.
She had swept her blonde hair into a topknot and completed her look with a funky pair of specs before taking a selfie in the mirror.
Cherry is not the only celebrity to be supporting Jeans For Genes, which raises awareness and understanding of genetic disorders in children.
On Tuesday night, stars including Lauren Goodger, Imogen Thomas and Jessica Wright attended a Jeans For Genes Day launch party in London.
Check out our gallery below to see the line-up of stars at the Jeans For Genes Day party:
Copyright: WENN James Shaw