“He was slightly built, his face aquline and darkly handsome, set off by the
crimson cap with an eagle feather in its band and the wide crimson cloak that fell gracefully around him.  When he dismounted, the natural grace with which he moved, a dancer’s grace, took her breath away.  Had she ever wished to be fair and rounded, when dark and slender could show this beauty?”  (141)

 This is Lancelot through Morgaine’s eyes, at their first meeting.  He remains this
way to her and to many of the others that meet him; he seems almost ageless, and eternally beautiful.  Notice that his appearance conveys his pagan background rather than his Christian loyalties.

 
  Bradley, Marion Zimmer. The Mists of Avalon.  Alfred A. Knopf, 1982.