This Harry Potter fan art contains
bellbottom trousers, bell bottoms, and bellbottom pants.
There might also be
long trousers, long pants, hip boot, thigh boot, and pantleg.
Harry Potter Cast, spotted in this video are: Daniel Radcliffe, Rupert Grint, Emma Watson, Tom Felton, Bonnie Wright, Matthew Lewis, Evanna Lynch, James Phelps, Oliver Phelps,