Couldn't find much info and one site said that Momo makes them. Would you maybe mean these jeans?

Momotaro Jeans

There is an actual brand called Momo.. 

And there is a K-pop group called TWICE with a member named Hirai Momo.  I havent been able to find out what brand jeans she wears but i would guess a Korean brand.

Theres also a store called Twice.  They sell jeans.  

Which thing above are you talking about?

Polyester thread would be a better choice, cotton thread has very little give and breaks easier than polyester thread.