The album was led by saucy track I Kissed a Girl and included further hits Hot n Cold, Thinking of You, and Waking Up in Vegas.
Subsequent albums Teenage Dream and Prism were UK number 1’s and her fifth studio album, Witness, was released in June 2017.
Born on October 25, 1984, the 33-year-old star was named Katheryn Elizabeth Hudson – but goes by the stage name Katy Perry to avoid confusion from the Oscar-nominated actress Kate Hudson.
Another career highlight was her star turn at the 2015 Super Bowl Halftime Show which saw her wow audiences with a dazzling medley of tunes - and guest spots from Missy Elliott and Lenny Kravitz.
I definitely felt a certain way about the whole situation. ' I had to sit back and reassess what was really going on.
Having a year and a half to reflect on it, you start questioning everything…The timelines… After you have some time to start thinking about it, you start putting things together.
Russell Brand isn’t the only British man Katy Perry has enjoyed a high profile romance with – she also dated Orlando Bloom (with headlines being made when he stood naked on a paddleboard with her seated in a bikini).
Katy Perry is an American musician, singer-songwriter and actress from Santa Barbara, California.
They parted ways over a year ago, but he's clearly still coming to terms with the heartbreak, because he's channeled it all into a solo project called "I think it was inspired by that whole situation.
That was the beginning of a really really awesome time for me... nd it appears he's still bitter about the way she ended the romance - by email.
When I was around her I felt really at ease and comfortable with myself... MCCoy added, "It started off with 'I love you so much I hate to do this...' Someone that you are ready to spend the rest of your life with sends you a f**king email just s**ting on your whole parade.
It was the most amazing thing ever." But the star couldn't hide his dark thoughts as he admitted he tried to hide his drug use from his Christian girlfriend. It destroyed me." Perry went on to romance and marry British funnyman Russell Brand, but that relationship ended in heartbreak for the singer at the end of 2011.
But when MTV News caught up with the Gym Class Heroes frontman, he revealed that isn't the case at all.