Coleen Rooney and Sam Faiers are two of the celebrity ambassadors for this year's Jeans For Genes Day appeal.
The annual campaign raises funds for charity Genetic Disorders UK, and this year will see celebrities such as Made in Chelsea's Caggie Dunlop and Louise Thompson donning specially designed T-shirts to raise awareness.
Coronation Street star and HELLO! Online blogger Catherine Tydesley will also be joining in on for the appeal on the 19th September, and will be joined by TOWIE's Ferne McCann.
The charity aims to help children and families all over the UK who are living with a genetic disorder.