Is there an alternative to breast implants?

i'm only 17, and my boobs are different sizes. i know its normal for one breast to be slightly larger than the other, but mine is noticeable. when i wear a swimsuit, it's like i only have cleavage on one side, it's embaressing. i'm really self conscious about my body alone, and having 2 different sized boobs doesnt help. i don't think i'd consider breast implants, just cause my boobs are a good size, i just wish they were the same size. is there any alternative into making them more similar in size?