every vampire sparkles. that's why volturi have their cloaks so it wouldn't notice in the middle of the day... renesmee and nahuel and his sisters glow cause they're half human half vampires...
All 뱀파이어 sparkle in the sun. Like in New moon, in italy alice had to wear a 장갑 thingy on her arm, so she wouldnt sparkle in the sun, and give away the species of vamps.
Basically, all 뱀파이어 in the "Twilight series" sparkle in the sun - no matter whether it is Edward, Alice, another Cullen, a Volturi 또는 a nomade vampire.
They all sparkle. That's supposed to be like the point that they are so different and "monsters". So to prove that point the all sparkle. Except I think they ruined it in the movie.