Rihanna Disses Chris Brown, 'Doesn't Want' Ex At Grammy Awards, Avoids 'Awkward' 2015 Run-In? Will Karrueche Tran's Boyfriend 'Embarrass' Leonardo DiCaprio's Sexy Fling?

Rihanna is scheduled to perform at this year's highly-anticipated Grammy Awards on Sunday evening (February 8). It's unlikely that the "Pour It Up" songstress' infamous ex-boyfriend Chris Brown will attend - and RiRi's totally okay with that!

In fact, rumors suggest that the 26-year-old Barbadian beauty doesn't want Breezy there - at all.

RiRi will hit the stage with Kanye West and Paul McCartney to perform their new monster collaboration, "Four Five Seconds" -

And the "S&M" superstar wants to focus all of her positive energy on the upcoming performance. No boy drama allowed!

An alleged HollywoodLife.com insider reveals:

"She has a big performance and she wants it to be her night... She doesn't want it to be dominated by everyone leaving the show talking about Chris and Rihanna in the same building. The Grammys are about the celebration of music and Rihanna has a job to do, she wants it to be drama free so she wants Chris not to be there."

Good point - but would the "Loyal" crooner's presence really be that much of a downer? The former hip-hop couple's been broken-up for a few years now! Breezy's currently dating aspiring model, Karrueche Tran.

Still, hopefully the 25-year-old singer got the clear message, although he hasn't talked to RiRi in months:

"She will not tell him personally but feelers have been sent out that she doesn't want him there and hopefully he will listen."

Do MstarsNews readers think that's fair?

Meanwhile, apparently the #BadGal is still "hooking-up" with (older) Hollywood heartthrob, Leonardo DiCaprio. So a Chrianna reunion is still highly unlikely.

Stay tuned for more Grammy Awards coverage. Here's a full list of performances:

Madonna ("Living for Love")
Gwen Stefani
Adam Levine
Ariana Grande
Katy Perry ("By the Grace of God")
Sia
Lady Gaga
Tony Bennett
Rihanna/Kanye West/Paul McCartney ("FourFiveSeconds")
AC/DC
Ed Sheeran
ELO
Eric Church
Beck
Chris Martin
Sam Smith
Mary J. Blige
Beyonce
Common
John Legend ("Take My Hand, Precious Lord" and "Glory")
Herbie Hancock
John Mayer
Questlove
Juanes ("Juntos (Together)")
Pharrell Williams
Usher
Miranda Lambert
Tom Jones
Jessie J
Hozier
Annie Lennox
Brandy Clark
Dwight Yoak
Lang Langam