Neal Adams is one of the greats of comic book art with a career spanning from the 1970s to the present day. Just about every major comic book has had his magic applied to their pages at one time or another.
His renditions of Tarzan, Conan, Batman and Superman are just stunning.
There isn't much Neal Adams' Vampirella art (contact me if you know different!), but the few bits I have managed to find are below.
Neal's web site is at www.nealadams.com.
If you want to know how Neal gets his inspiration, check out the interview with Angelique Trouvere.