I've read that Mystique can turn into animals and inanimate objects, but could she turn into something really small, like a bug?
What are the limits of her shapeshifting powers?
In Days of Future Past, there's a scene where Mystique infiltrates Bolivar Trask's office. She shapeshifts into the form of Trask, and it jumped out at me that Mystique was able to successfully pass as a dwarf.
Aside: as per Wikipedia, Peter Dinklage has a form of dwarfism, and I wanted to make sure I was using the right word.
Anyway, according to the movies, she can at least turn into people that are noticeably smaller than her. Off the top of my head, I can't remember any occasion in the comics that she shapeshifted into someone significantly larger (e.g., Apocalypse, Colossus, Hulk).