Did i mess up buying my wayfarers?

i bought some rx2140 wayfarers today but i forgot about the different sizes, and i ended up getting the 50mm. if i would have known i probably would have got the 54mm because i like the bigger ones better and it looks more buddy holly style. people say they think i look better with the smaller ones but i like the look of the bigger ones. i think im allowed to exchange them but i dont want to go through the hle. do you think 54mm is that much of a difference?