Rihanna was injured in London Saturday night, after a heckler threw a bottle at her. Rihanna was leaving a club when the guy started yelling at her.  Sources say he was upset about her relationship with Chris Brown. The bottle didn't hit Rihanna, but she fell against a metal grate while trying to avoid it, and cut her leg.  Rihanna's bodyguard tried to chase the guy, but he injured his leg, too, and ended up in the hospital.  The suspect got away.

RIHANNA and CHRIS BROWN were at the same club Thursday night, but they didn't speak or spend any time together.  It sounds like they're back OFF . . . and it might be because Chris spent the previous night at a club with his ex-girlfriend Karrueche Tran.

Rihanna may have been snuggling up to beau Chris Brown at the Grammys earlier this month and ignoring him just a few days later, but one thing's for certain: the "Stay" singer's fans aren't too happy about their hot-and-cold relationship.On Saturday, Feb. 16, the Barbados songstress was enjoying a night out on the town in London with some pals at hotspot The Box when someone reportedly threw a bottle of Lucozade -- a British energy drink -- in her general direction. According to reports, the culprit also screamed at the singer about her relationship with Brown, 23.Rihanna was left with a bloodied right knee that photographers caught just as she left the club at the end of the night.But the singer didn't seem too fazed by the angry clubgoer's antics. Early Sunday morning, she took to Twitter to address another bizarre incident -- the UK's Sunday Times paper ran a teaser at the top of its page likening Rihanna to their beloved, late Princess Diana.

ZACH GALIFIANAKIS and RENEE ZELLWEGER have been helping out a homeless woman who works at a laundromat near their neighborhood for the past two years.  Zach got the woman an apartment and pays the rent and utilities . . . while Renee furnished the place and keeps the fridge stocked.

CHARLIE SHEEN threw down $10,000 on a therapy dog for a Wisconsin teen who was injured when she fell 100 feet from a malfunctioning amusement park ride a few years ago.  They actually got to Charlie through his godfather, who's kind of a friend of a friend.  Charlie says, quote, "I like to pay it forward.  People come into your orbit for a reason.  You don't always know what that is ahead of time, but if I ignore these requests then I don't have any opportunity to see where these things lead us, or lead me."

FOREST WHITAKER was frisked at a New York City deli Friday by an employee who thought he'd stolen something.  Obviously, he hadn't.  He was upset, but it doesn't sound like he's going to do anything about it.  His rep says, quote, "Forest did not call the authorities at the request of the worker who was in fear of losing his employment.  [But] Forest asked that, in the future, the store change their behavior and treat the public in a fair and just manner."

 On Valentine's Day, VIN DIESEL posted a weird video of himself singing along to RIHANNA'S new song "Stay".  What makes it weird is that Vin is in a dark room with bare walls, singing into a microphone stand . -And Rihanna's "Stay" video is projected on the wall next to him.  At the end he says, "Happy V-Day" to someone three times, and then kisses the mic.  (???)  We can't tell who he's talking to.

Legless Olympian OSCAR PISTORIUS cried when he was charged Friday with the murder of his girlfriend.  Meanwhile, police found a bloody cricket bat in Oscar's house, and sources say the woman's skull was smashed in.  Although they're not saying whether Oscar used it on her, or if she used it on him in self-defense.

The latest "Die Hard" movie, "A Good Day to Die Hard", made $25 million over the Valentine's and President's Day weekend, beating "Identity Thief" by about $1.5 million. That's a decline compared to the previous "Die Hard" movie, "Live Free or Die Hard", which made $33.4 million on its first weekend when it came out back in 2007.  (--You can see how all the movies in the "Die Hard" franchise rank here.)-The JOSH DUHAMEL-JULIANNE HOUGH romance movie "Safe Haven" made $21.4 million in third place, followed by "Escape From Planet Earth" with $16.1 million.  And "Beautiful Creatures" finished in 6th place with $7.5 million.

1.)  (NEW)  "A Good Day to Die Hard", $25 million over the weekend, for a total of $33.2 million since its Wednesday opening.

2.)  "Identity Thief", $23.4 million.  Up to $70.7 million in its 2nd week.

3.)  (NEW)  "Safe Haven", $21.4 million.  Up to $30.3 million since Thursday.

There's talk on the World Wide Web of Movie Gossip that HARRISON FORD will return to play Han Solo in "Star Wars 7".  We have no idea if it's true, and that's literally all we've heard.

 SARAH MICHELLE GELLAR will co-star on ROBIN WILLIAMS' upcoming CBS sitcom, "Crazy Ones".  She's playing his character's daughter. -Robin is playing "the brilliant head of an ad agency, working alongside his daughter, the agency's creative director."  The show seems like a strong candidate to make CBS' schedule next fall.

TRAVIS BARKER is skipping BLINK-182'S upcoming Australian tour, because he's still too scared to fly . . . and it didn't work out for him to take a boat.  He says, quote, "I still haven't gotten over the horrific events that took place the last time I flew, when my plane crashed and four people were killed."  A friend of the band, Brooks Wackerman, will take his place.

John Mayer put a ring on Katy Perry's finger – just not the kind you might expect. After the couple was photographed leaving Vincenti, an Italian restaurant in Los Angeles, on Valentine's Day, Perry was spotted wearing a ruby on her ring finger, leaving many to ask if Mayer, 35, had popped the question. Although Perry, 28, is beaming in the photo, a source tells PEOPLE the couple is "not engaged."

Downton Abbey's third season finale on PBS's Masterpiece was, to say the least, a spoiler's paradise. On to season 4.

Maya Rudolph is going to be Up All Night, all right! The actress is reportedly expecting her fourth child with writer/director Paul Thomas Anderson, according to The Hollywood Reporter. The actress has informed NBC that she is pregnant, sources tell the site. NBC and Rudolph's rep declined to comment.Rudolph, 40, and her longtime partner Anderson, 42, are already parents to Pearl, 7, Lucille, 3, and Jack, 19 months. The news comes just after Up All Night's Christina Applegate exited the series for creative reasons

Adrienne Maloof is breaking up with the "Real Housewives of Beverly Hills" -- informing producers she does not want return to the show next season, TMZ has learned.Sources close to Adrienne tell TMZ she has had multiple talks with the show's honchos over the past few months ... discussing her desire to leave the show.We're told Adrienne believes the intrusiveness of the show has "ruined" her family and personal life. 

Honey Boo Boo's Uncle Poodle is sending pics of his schlong to random men on the Internet and name-dropping HBB -- all in the name of getting laid -- this according to a man who is now shopping the dong shots to media outlets.TMZ was offered the pics which show a naked man who appears to be Uncle Poodle ... in the shower. According to the seller -- a man who lives in Georgia -- Poodle sent them earlier this week on the gay social app Grindr, Poodle -- real name Lee Thompson -- is frequently featured on "Here Comes Honey Boo Boo" and is openly gay. The man selling the pics claims Poodle dropped HBB's name almost immediately during a chat ... saying,"So you know who honey boo boo is? That's my niece.” The seller claims there was no hookup.We called Poodle to see if he's planning to take legal action, but haven't heard back.

TV TONIGHT

--"Oprah's Next Chapter" . . . 8:00 to 10:00 P.M. on OWN.  Oprah's shares her favorite behind-the-scene moments from past Academy Awards shows.

--"Cake Boss" [5th Season Finale] . . . 9:30 to 10:00 P.M. on TLC.

--"Teen Mom 2" [8th Season Premiere] . . . 10:00 to 11:00 P.M. on MTV.