Ricky on the red carpet at Potter Premiere
Torrential rain didn't put off hundreds of Harry Potter fans who crammed into London's Leicester Square for the world premiere of Harry Potter and the Half-Blood Prince.
The film's stars did their best to brave the sudden downpour on the red carpet, and Ricky was there to meet them.
"If ever there was a time I needed a bit of magic to stop the rain, it was on Tuesday at the world premiere of Harry Potter and the Half-Blood Prince.
Ricky's Newsround umbrella came in VERY handy
The heavens opened as the stars arrived, causing chaos for loads of reporters, cameras and of course the stars in their posh frocks and suits.
It started off a dry and cloudy afternoon in London's Leicester Square. The area had been completely revamped and turned into what looked like a movie set.
There were plenty of Hogwarts school banners flying high on lamp posts, hundreds of movie posters and a never-ending red carpet.
Ricky meets more stars at Potter Premiere
Fans from the UK and around the world had travelled far and wide see their idols. Many of them spent the night camping inside a tent to make sure they got a glimpse of Daniel, Emma and Rupert.
A few of the fans had their heads buried in one of J K Rowling's books and I even found one fan knitting a Hogwarts scarf!
After I finished a live Newsround chat with Sonali, I got in position, ready to interview all the big celebrities attending the premiere.
All of sudden the sky turned grey and the clouds above my head thickened. I started to think I was actually on the set of a real Harry Potter movie.
Then it got worse. Rain started falling from the sky like never before.
I've never seen so much rain. Instead of being at a glamorous premiere it felt like I was having a shower in my bathroom!
The whole Newsround team got absolutely soaked, making life really hard.
The cameras started to steam up in the rain as Ricky interviewed Rupert Grint
It was such a challenge to keep all our camera equipment and microphones dry. The Newsround brolly came in very handy!
As I interviewed Tom Felton, who plays Draco Malfoy, I heard a clap of thunder. The same thing happened while I chatted to Rupert Grint, who plays Ron Weasley.
My clothes got absolutely soaked as the rain started to fall down my back and even into my shoes.
It's not the first time a Harry Potter premiere has been plagued with bad weather.
Let's hope the final two instalments won't be so dramatic off screen and that the sun shines!"