And just hours later, the blonde beauty shared the revealing photo on Instagram, pouting her heart out.
The star shows off a more natural look with minimal make-up, and keeps her hair loose and chopped around her face.
It was in sharp contrast to her appearance at the airport - where the star showed off her unusual style in a black hat, a matching long coat and sunglasses.
It's not the first time Reets has stripped off - and she posed topless for French publication Lui magazine in January - baring all for photographer Terry Richardson.
Read more: Rita Ora beams as she goes topless for magazine cover
The blonde bombshell wore nothing else but bright red lipstick, a PVC skirt and a smile.
See the star arriving in Milan:
