Loosing weight, smaller boobs?

So im currently weing about 65 kg. But im concidering loosing about around 10 kg maybe. And the reason for that is my boobs... they are just to big, and i dont really like the look of them, like they aren't saggy, but they aren't perky either. Im using 65I in bra size, and that about a 30H/30G. My clothes size is small/36-38. Im fit, so thats why i haven't loosed any weight yet, because i dont want to loose all my muscles. So my boobs are just to big, and one sports-bra doesn't give me enough suport, and two sportsbra hurts my shoulder/neck. Its very expencive and time consuming to go bra shopping, and i want to be able to go around without a bra.

So what to do? Any advice how to loose 10kg over like a year? i dont want to starve myself, so nothing extrem.
Updates
+1 y
I am very healthy and i don't eat any fast food/sweets/soft drinks etc. I train hard 2-3 times a week, and i don't eat a lot. So it would be more helpful if someone could give me an specific eating plan/diet :)
Loosing weight, smaller boobs?
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