Mystique has disguised herself as all manner of mutant and human alike. Nowadays, her powers seem only limited by her own imagination, but she did turn herself into half an airplane once to fly around (don't ask).
Her powers have yielded Raven Darkholme (Mystique) many unique opportunities; in addition to impersonating countless mutants, she's posed as a spy, a supermodel, the secretary of defense, and even President Reagan.
Her powers make her virtually immortal, giving her amazing healing abilities as well as allowing her to virtually not age, being well over 100 and at least two children, Graydon Creed and Nightcrawler, as well as having adopted Rogue.
This is a list of Mystique's best disguises throughout the years. Take a look through and vote up your favorites.
Mystique as Foxx