Back in South Africa I was skinny. Then I moved to the UK, there I picked up weight very quickly and struggled for years to shake it off. (from size 12 - size 18) Now that I am living in the USA it is much easier as the food is more similar to South Africa.

When you move countries be very careful, you can not believe how it effect your weight even if you eat less (the types of food might contain much more fat or sugar than you are use to)