And the L’Oreal Paris ambassador revealed her red carpet secret – L’Oréal Paris Colour Riche Lipstick, Cannes Edition.
For fans wanting to copy her look, the lipstick is very affordable, costing just £8.99, and available from Amazon.
The 34 year old looked sensational on the trip, and she often helps fans out with beauty advice.
Previously she shared which shade of foundation she uses from the L’Oréal True Match range.
She wrote: “A year ago today I was part of the incredible True Match #YoursTruly campaign which stands for Diversity.
“It’s important that we embrace diversity across the beauty world and make sure that everybody is able to match their make up to their skin tone.”
Cheryl arrived at Cannes after missing the event last year following the birth of her son Bear.
She made her red carpet debut in the sheer white gown by Lebanese designer Zuhair Murad, and all eyes were on her as she stepped onto the red carpet.