Open Question: how do i lose a stone by the end of this month in time for my birthday?

like everyone i wanna look goood for summer. my birthday is on the 7th july and before then i wanna lose at last a dress size and at least a stone. i weighed bout 60kg the last time i checked and i wanna drop it down to at least 53kg am short at 5.1 i look bigger than iam. im lookin for the quickest ways to lose the weight by the end of the month, it be salads and gym everyday or milkshakes and running i will do it. i wanna look descent for my 18th. got any ideas?