  We investigate how braneworld gravity affects gravitational collapse and
black hole formation by studying Oppenheimer-Snyder-like collapse on a
Randall-Sundrum type brane. Without making any assumptions about the bulk, we
prove a no-go theorem: the exterior spacetime on the brane cannot be static,
which is in stark contrast with general relativity. We also consider the role
of Kaluza-Klein energy density in collapse, using a toy model.
