This is so cute!
RiRi wants Katy's pre-wedding celebration to be just as elaborate as her nuptials to Russell Brand, saying that "it’s taking up way more time than my tour. It’s so much pressure. Her wedding is going to be the best wedding I’ve ever been to, and now I have to match the bachelorette party to that!"
That's actually really sweet and we're sure whatever RiRi plans, it will be FABulous!
[Image via WENN.]