Arwen vs. Galadriel

[Raynor]

Arwen's beauty is akin to Luthien's

Originally Posted by Many Meetings, FotR

So it was that Frodo saw her whom few mortals had yet seen; Arwen, daughter of Elrond, in whom it was said that the likeness of Luthien had come on earth again; and she was called Undomiel, for she was the Evenstar of her people.

while Galadriel is simply described as beautiful

Originally Posted by The mirror of Galadriel, FotR

Very tall they were, and the Lady no less tall than the Lord; and they were grave and beautiful.

True enough, the Silmarillion mentions Galadriel as the most beautiful of all the house of Finwe.