How do you say are very beautiful in Serbian?

There are a few ways to say "are very beautiful" in Serbian, depending on the context and formality:

Formal:

* Ви сте веома лепи. (Vi ste veoma lepi.) - This is the most formal way to say it, using the formal "you" (vi) and the adjective "lepi" for "beautiful".

Informal:

* Ви сте прелепе. (Vi ste prelepe.) - This is more informal, using "prelepe" which translates to "gorgeous" or "stunning".

* Ви сте баш лепе. (Vi ste baš lepe.) - This is also informal and means "you are very beautiful" literally.

* Много сте лепе. (Mnogo ste lepe.) - This means "you are very beautiful" and is a more common way to express this in informal settings.

For a single person:

* Ти си веома лепа. (Ti si veoma lepa.) - This is the formal "you" (ti) for a single person.

* Ти си прелепа. (Ti si prelepa.) - This is a more informal way to say "you are beautiful" for a single person.

* Ти си баш лепа. (Ti si baš lepa.) - This is also informal and means "you are very beautiful" for a single person.

Remember to choose the right form of "you" (vi or ti) based on the situation and the person you are addressing.