The 31-year-old superstar never has a hair out place, so it was only a matter of time before a major makeup brand signed her up for a cosmetics launch...
Katy Perry's Royal Nails
Alexandra Burke and Tom from McFly were among the stars to tweet their congratulations to William and Kate.
Taio Cruz was up early on wedding day to tweet, "@TaioCruz. Best wishes to HRH Prince William & Miss Catherine Middleton today. Congratulations".
Here's a selection of the other tweets,
@katyperry "In honor of the Royal Wedding, I present you... My royal NAILS! CONGRATS!"
@TinieTempah "Everybodies watching! #RoyalWedding"
@RochelleTheSats "Yaayyyyyyyyyyyyyyyy! What a stunning Bride!!"
Alexandra Burke, "The day is finally here. The royal wedding !!!!! :)"
Mollie from the Saturdays Ahhhh it's THE WEDDING of all weddings!!
Nathan from The Wanted: So we have just had a few rather excited visitors and apparently we are having a british tea party when we are watching the #royalwedding! x
Tom from McFly: "Wish I was a Prince".
Sir Elton John, David and Victoria Beckham, Prince William's uncle Earl Spencer and Prince Harry's on-off girlfriend Chelsy Davy were among the many famous faces in the congregation. Westminster Abbey was transformed for the occasion, with a towering avenue of delicate English field maple trees along the nave.
California Gurl has been named as Billboard magazine's 'Woman Of The Year' for 2012.
Rihanna and Katy Perry are up for several awards at the 2012 music ceremony
The 'We Found Love' singer has recruited a team of a-list stars to help out each week on her Styled to Rock reality show.