Entertainers have been putting their elaborate costumes on show at Notting Hill Carnival for a second day.
More than a million people are reported to have turned out to watch them parade through the streets of west London.
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The star - who played Miranda Hobbes in the hit New York-set show - posted a message on Twitter announcing her run.
Another cold night to come before temperatures slowly start to recover throughout the coming week.
The opioid epidemic is so extreme in the US city of Manchester, that the drugs are killing almost 100 of the 100,000 residents each year.