Hello there, In my point of view, I'm happy for you as you know how to dress up like that. At last you are able to blend in very well within a quick span of time. Congratulations. I am extremely happy and I am very proud of you. Even though I always nag at you, you proved me wrongs by showing me that my hard work did not go to waste
I would rather say it the following way: "I'm happy that you dress up like that. Finally, you are able to find match very quickly. Congratulations. I am happy and proud of you. Even though I always nag at you, still you proved that my hardship was worth it"