*EXCLUSIVE* Singers Rihanna and Chris Brown attend the 2009 GRAMMY Salute To Industry Icons honoring Clive Davis at the Beverly Hilton Hotel on February 7, 2009 in Beverly Hills, California.First, Usher‘s wife has a plastic surgery emergency in BRAZIL and he misses his performance at Clive Davis‘ pre Grammy party. Making him a no show. 
Now, two of “The” most anticipated performances of the night was cancelled.  Rihanna was expected to perform but was a no show at the awards show.  According to E Online, Chris Brown was being detained by the police at the time he was scheduled to perform.  I’m not sure what happened but the Academy released this statement, “We have just been informed that Rihanna will not be attending tonight’s 51st Annual Grammy Awards.  We’re sorry she is unable to join us this evening”.
We pray that they both are doing fine.