The Bleeding Love hitmaker tried to ensure she is surrounded by as many home comforts as possible during her stay in the States.
Leona, who is vegetarian, splashed out hundreds of pounds filling her suitcase full of old-fashioned snacks to stop herself getting homesick while she's away.
According to British newspaper The Sun, the 26-year-old bought snacks such as baked beans, chocolate, Marmite, and tomato ketchup.
The X Factor winner's mum Maria also reportedly made some of her daughter's favourite meals.