The 'California Gurls' singer launches her 3D concert movie with a pink carpet event in Hollywood. Katy was joined by a host of stars, including Carly Rae Jepsen and her 91-year-old Grandma.
Katy Perry: "I Love That Adele Is Pregnant" - Video
The 'I Kissed The Girl' star tells Capital that she was thrilled to hear the news that the British star is expecting her first baby.
The 'Part Of Me' singer told Capital FM that she's always been fond of the 'Someone Like You' singer and was pleased to see her in her new 3D movie.
"Yeh, I love the fact that she's going to have a baby," she revealed. "That's so cute of her – she's such a good woman.
"She was really nice in my movie saying nice things about me – I've always loved her."
The American star recalled a meeting the pair had during the early days of her career in the capital which involved a burrito.
"She came and saw one of my shows really early on when I played this small venue, not Water Rats, it was after the Water Rats, I played this little venue maybe twice the size and she came backstage and I was eating a burrito.
You can view a picture of Adele after her Grammy Awards 2012 triumph below:
"She was like 'a burrito – where'd you get that burrito in England, where did you get Mexican food', and she took it."
Adele announced the news of her pregnancy on her official website last week and stars from around the world have been praising the good news including Lady Gaga who called the star "gorgeous".
You can watch Katy speaking to Capital FM's showbiz reporter Kevin Hughes about Adele below:
Meanwhile, Katy Perry's European premiere of her new movie 'Part Of Me' took place in London's Leicester Square last night (4th July).
Latest Katy Perry
The 'I Kissed A Girl' singer's marriage came to an end at the close of 2011 and was finalised in summer 2012.
The 'I Kissed A Girl' singer was said to be seen getting close with the Hollywood action star.
As Rita Ora stars opposite Snoop Dogg and David Beckham in a new animation, Capital looks at other pop stars who have been transformed into cartoons, including Katy Perry, Lady Gaga and Rihanna.
The 'Part Of Me' star is back with the final chapter from 'Teenage Dream'.