The bank holiday weekend sees the Notting Hill Carnival take over a big chunk of London.
More than a million people crowd the streets on Sunday and Monday, watching floats and processions go past.
Sunday was Children's Day and it's thought around 250,000 people went to watch.
The carnival features processions of brightly dressed calypso dancers shaking and stomping their way through the streets to the sound of blaring music.
There is a huge police presence at the carnival to keep people safe. There are around 11,000 police shifts planned.
The carnival has a theme this year - Set Them Free. It celebrates the 200th anniversary of Britain banning slaves.