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It was one heck of a party - and Cardiff city centre wasn't looking its best after thousands of fans celebrated Wales' Grand Slam victory.

An estimated 275,000 rugby fans came to Cardiff and the party continued well into Sunday morning after Wales' awesome 25-7 win over Ireland at the Principality Stadium.

Despite the appalling weather, pubs, bars, clubs and takeaways were heaving across the city.

But, in their wake, rubbish was left piled around bins and strewn across the city, in particular St Mary Street, Queen Street and Caroline Street.

(Image: Richard Swingler)

Towers of discarded kebab boxes could be seen piled high around already overflowing bins, while plastic pint glasses were left stacked on almost any horizontal surface.

Clear plastic ponchos, worn by many to protect against the worst of the rain, were ditched.

But council staff were out in force early on Sunday morning emptying bins, sweeping streets, and hosing down pavements, taking the city back to its glorious best by early on Sunday morning.

How the streets looked by 10pm on Saturday:

(Image: WalesOnline)

(Image: WalesOnline) (Image: WalesOnline)

And the mess got bigger, and bigger

(Image: Wales News Service) (Image: Wales News Service) (Image: Wales News Service)

(Image: Wales News Service)

But the clean-up was incredibly speedy

(Image: WalesOnline)

Council staff were out first thing on Sunday:

(Image: WalesOnline)

(Image: Wales News Service)

And by 7am Caroline Street was back to normal:

(Image: WalesOnline)