We haven't heard too much from Chris Brown about his upcoming album X, which is slated to drop this summer. The r'n'b singer has been in the news for problems on top of problems, but today Chris took the focus off of that by tweeting out some of the features that'll be on X.

We've already heard about the Nicki Minaj and Kendrick Lamar feature, but Chris also revealed that there'll be a Rihanna feature as well as B.o.B, Kelly Rowland and Wiz Khalifa. Plus, there's the Aaliyah-featured "Don't Think They Know." However, Breezy says there are more surpises to come.

Who would you like to see on X?

[Update: Rihanna Slams Chris Over Feature?]

Shortly after Chris' tweet, Rihanna posted what seems to be an indirect response to Brown's claim that she would appear on the album. The image used a quote from "Love & Hip Hop," reading "Bitch you will die, be born again, die again, and be born again before I do a song with you bitch," with the accompanying caption "Phuck O.utta H.ere B.itch!!!"

Notice that RiRi calls attention to the letters O, H, and B which are the initials of Brown's crew. She likely intends it to be read as Phuck O.H.B.

You can view the image in the gallery above.