It's good that Kob finally got her teeth fix. To me I think she look much better and it makes her smile better too. The person mention above is right, Kob's teeth wasn't overcrowded like Joy's Siriluk (She needs to get it fixed with all that $$ she have). For people who never wore braces before, if your teeth is really overcrowded then they will have to remove some and close the gap up by wearing braces or invisalign. Your orthodontics should explain it to you how the outcome will look like.
I think i understand what that person meant from the above post. Usually overcrowding comes from your baby tooth not coming out and the adult tooth is ready to come out. The adult tooth then comes out crooked, etc.
Putting on veneers is good if you have really bad teeth. Like cavity in your front teeth when you smile. To me veneers look so fake because it's kinda big and it makes your mouth looks big so you can tell it's fake. It cost about 1,000+ for a tooth. It's what you call cosmetic surgery.
It is possible to do mouth reconstruction where they pull all your teeth out and make it straight, but it's pain pain pain and scary. Just suffer and wear braces for 2 years and you'll be fine. Braces isn't all that bad, just get clear brackets. Some people don't even notice i have braces on when i had it. Just brush brush brush and keep your teeth clean so it won't look gross....lol