Notting Hill revellers have painted the three and a half mile parade route in fluorescent powder paint as they kick off the 59th year for the huge street party.
Paint and paint powder was thrown in the area West London with many guests shunning protective overalls to indulge in the carnival excitement.
Today's family day will see a relaxed parade for children before hard-core partying commences in the evening.
The event is expected to attract more than one million revellers to its floats, food stalls and music.
The music is set to stop for a 72-second silence in tribute to the 72 people who died following the fire at Grenfell Tower in June 2017 being within half a mile of the parade route.
The large party in West London is celebrated by many Caribbean cultures in places where West Indian people have migrated.
However, this year police will have the power to stop and search people at the Notting Hill Carnival in a bid to crack down on violence.
Scotland Yard said it would be imposing a Section 60 order across the carnival's geographical area between 9am and 11.59pm on Sunday.
The order allows officers to search people if they believe they may be carrying offensive weapons or in anticipation of violence.
Notting Hill Carnival Gold Commander Dave Musker said: 'The MPS has worked tirelessly to develop an appropriate and proportionate policing plan; however, given the intelligence picture and incidents of violence I have seen across the city over the last week, I have made the decision to authorise this order as an additional preventative measure.
'The use of this authority will reassure our communities that we are constantly working to protect them. It will also send a message to those intent on committing acts of violence that we will robustly target them.'
The measure is part of a number of plans put in place by the force to help keep carnival-goers safe after a wave of violent crime in the capital in recent months.
Knife arches are being installed for the first time, and will be placed at 'strategic points' along the route of the west London street party.
The two-day event will also be policed by the highest number of officers in six years, with some 13,000 officers deployed - around 450 more than last year.
This article has been adapted from its original source.
© Associated Newspapers Ltd.