Can Ты be ugly when your young and then become hotter when your older?

Yes, Ты can! It's called blooming, and it happens to a lot of people.

yes.

I wouldn't know,I was always hot.

Yes. That's what happens to every one of us.
Except some individuals who stay exactly the same douchebags.

yes.
As Ты go through puberty your body changes,your hair changes color.You become еще mature and are interested in new things.You don't think the other sex is gross,like Ты did when Ты were little.Your apperince changes as Ты get older,and Ты become a new person.

Indeed.

...
In case Ты need еще examples, click link

It happens all the time

YEs, it happend to me

Who cares?