Small French translation request

Just a quick question. How does one refer to two or more females as "very beautiful" in French?

It's part of the next chapter. I want to be absolutely certain I get it right, but I haven't studied foreign language since High School ;-)

The exact sentence is,

“My young friends, you both look very beautiful!"

I can't remember if it's tré or trés. I remember 'Belle' means 'Beauty' because of Beauty and the Beast, but that's about it.

Thanks in advance! :-D

~Zoe