I usually skip breakfast, I eat 1 (small) meal a day in the early evening.
Sounds like you're starving yourself. Which means that the minute you start eating normal portions again, the weight is going to come piling back on, quick and ugly.
Though it would seem to make sense to limit calories in order to lose weight, skipping breakfast is about the worst mistake you can make and it will catch up with you and you'll stop losing... I am dieting for my summer holiday as well and went totally gung ho a couple of weeks ago and went a week on less than 900 calories a day with only having 75 for breakfast and exercising like a fiend. At the end of the week, I had gone up 2 lbs
I was so livid but I knew it was because I was being silly and choosing to ignore the old chestnut about screwing up your metabolism by going into starvation mode.... I stopped and went back to more realistic caloric intakes and larger breakfasts and lost 3 lbs in a week...
You can't skip breakfast. (If you want your metabolism to burn calories that is....) We all know this but dieting makes us do desperate things, especially on short term dieting timeframes.
Have a little something in the morning to get your metabolism moving.
Sorry, lecture over!