Contrary to popular belief, Holland lops are smaller than Mini Lops. Holland lops are the smallest of the lop-eared breed, averaging about 4 pounds, while the Mini Lop weighs an average of 5 1/2 to 6 pounds.
When I refer to the Mini Lop I am talking about the US Mini lop.
Now before you get confused lets clear some things up:
The US Mini lop is a different breed from the UK Mini lop. The UK Mini lop (also called Miniature Lop) is the equivalent of the US Holland lop. (And if you want to have a brain twister; the US Mini Lop is the equivalent of the Dwarf Lop in the UK.)
UK Mini Lop = US Holland Lop
US Mini Lop = UK Dwarf Lop
The Holland Lop originated in Holland in 1964. Adriann Van de Cock was of the opinion that the French lops were too big so he decided to breed them with Netherland Dwarfs to reduce their size. He eventually succeeded in breeding a dwarf lop from French Lops, Netherland Dwarfs, English and Dutch Lops.
Aleck Brooks III imported these "Netherland Dwarf Lops" into the United States in 1975, and in 1979 the American Rabbit Breeders Association declared the Holland Lop an official breed of
rabbit.
Paragraph courtesy of: http://www.hollandlopbunny.com/