I'm 26. Is it effective to have braces to correct my upper protruding 6 front teeth? (photos)

My front 6 teeth are considerably larger and uneven in size than the rest of them and also they protrude out. It seems like they don't have space to pull them back. I tried braces when I was 13 but not to much avail. Will it be okay to get teeth transplantation to get them even out or the braces would be of any help?

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