Hi Anthony. It's really not that noticeable in that picture. I think you are just used to the longer length and it seems "thin" to you now. I agree with Itsmyface, let it grow for the next 3 weeks and right before the wedding you can do a light trim to knock off the stragglers to neaten it up. Stressing about it may slow hair growth so relax. Early congratulations on the upcoming nuptials!