Having your best friend at your wedding is a must for any bride. So when we heard that Katy Perry's best friend Rihanna didn't attend the her wedding in India, we began to wonder if anything had happened between the pair.

However, our minds were put to rest when Rihanna revealed that the reason she couldn't attend the wedding was because she was caught up in promoting her new album....or were they?

According to reports, The real reason RiRi didn't go to India was because of the man Katy was marrying because she believed that Russell Brand isn't good enough for Katy. An opinion that has left the girls "barely talking" to each other.

A source revealed to Now: "Rihanna told Katy she didn't think she should go through with it. She said she couldn't be a part of Katy's wedding since she absolutely doesn't approve.

"Rihanna and Russell are very rarely photogrpahed together because she doesn't think he's good enough for Katy. She just doesn't get the attraction."

Rihanna disapproves so much of Russell that she even reportedly tried to talk Katy out of marrying Russell on her hen night!

The source continued: "She was trying to go along with things even though she thinks Russell is bad news, but she reached breaking point when Katy and Russell had a fight just before the hen do."

"Rihanna told Katy how she felt. She's watched her get upset, she's witnessed the effects of 
the pair's arguments and seen Katy cancel the wedding twice."