Chris Brown Talks to Cops Lawyer Goes After Drake 
 
 EXCLUSIVE 
 
 has spoken with New York Police Dept. detectives about the bar fight that left a gash in his chin ... and law enforcement sources tell us his lawyer has given the NYPD "physical evidence" which allegedly showswas involved in the melee.We're told Chris' lawyer, Mark Geragos, went to the NYPD late Thursday to present evidence showing that Drake and Meek Mill were the aggressors, but earlier in the day Chris spoke with Detectives at an undisclosed location in NYC. Cops tell us Chris is not currently a suspect but rather "a witness and a victim." We're also told Drake is not currently a suspect.On the other side, we're told Drake has been "cooperating" with authorities, but we do not know if he has spoken to cops -- it appears his representatives have had conversations with detectives.Sources tell us ... the bad guy here may be someone in Chris' camp, who was inciting Drake and his people all night.As we previously reported both Chris and Drake were trash talking each other before the fight, flipping each other off and what not. ||||| Actress/Singer Rihanna attends the Los Angeles premiere of "Battleship" at Nokia Theatre L.A. Live on May 10, 2012 in Los Angeles, California. Credit: Kevork Djansezian/WireImage.com 
 
 Rihanna is running herself ragged. 
 
 The unattached, "Where Have You Been" singer, 24, is at work on her seventh CD -- and trying to squeeze in some more zzz's! Recently, she opened up to Us Weekly about her jam-packed calendar -- and the effect it's having on that famous beach bod. 
 
 PHOTOS: Rihanna's sexy bikini bod 
 
 Recently, the pop diva made the leap from the recording studio to the big screen with her star turn in Battleship. "I want to do two more [movies] before touring again next year," Rihanna gushed to Us of her filming experience, even though, "My schedule is crazy!" 
 
 So crazy, in fact, that the Barbados-born beauty was hospitalized for fatigue following her appearance at the Met Ball last month, where she stunned in a black, reptile-inspired Tom Ford gown. 
 
 "I got no sleep [beforehand]," Rihanna explained. "It's harsh on your body!" 
 
 PHOTOS: Rihanna, then and now! 
 
 Her hospitalization -- and her shrinking bod -- have some fans fretting that she's dealing with something more serious, though Rihanna assures Us her nonstop schedule is the only thing to blame. 
 
 "I'm a size 0 -- and not happy about it!" she says. "I went way too far. I prefer myself a bit chunkier. I want my old butt back!"
– Rihanna's derriere isn't as ample as it once was, and the singer doesn't like that fact. "I'm a size 0—and not happy about it!" she tells Us Weekly. "I went way too far. I prefer myself a bit chunkier. I want my old butt back!" The 24-year-old lays the blame on her crazy schedule, which apparently has her losing out on sleep ... and landed her in the hospital post-Met Ball. "It's harsh on your body!" she says of her jam-packed life. And her run-yourself-ragged approach has many worried she's falling apart. Chris Brown and Drake apparently don't mind the size of Rihanna's booty; click for the latest on their reported bar brawl over the singer.