Iron Man 3 slays at the box office…Bye bye Barbara Walters…new celebrity judges to sit next to Simon Cowell on The X-Factor. Kellie Rasberry has the scoop in today’s Showbiz Top 5.

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“Iron Man 3” is still number one at the box office, earning another $72.5 million here in the US. Internationally, in just 3 weeks, “Iron Man 3” has already earned $949 million!!! “The Great Gatsby” came in second with $51.1 million. But hey! That’s better than the distributor’s predicted $40 million, so they’re happy with that! In third place was “Pain & Gain” with $5 million. And the only other new wide release this weekend was “Peeples.” It flopped with a debut take of just $4.9 million.

Hope you’re not too attached to some TV shows because a LOT of them have gotten the ax. One hundred and two shows are either canceled or ending…FAR too many to list here, but here are just a few. On ABC, say goodbye to “How To Live With Your Parents,” “Body of Proof,” “Happy Endings,” and “Malibu Country.” CBS has canceled two veteran series, “Rules of Engagement” and “CSI: New York,” which is the last remaining spinoff of “CSI.” On Fox, say goodbye to “Ben & Kate,” “The Mob Doctor,” “Fringe,” and “Touch.” NBC is losing a whole bunch of shows: “Smash,” “1600 Penn,” “Animal Practice,” “Deception,” “Do No Harm,” “Guys With Kids,” “Up All Night,” “Whitney,” and “The New Normal.”

Barbara Walters is formally announcing today that she is retiring next summer. So expect one big year-long goodbye party for Barbara on “The View.” And in other talk show news, NBC has announced that when Jimmy Fallon moves up to take over “The Tonight Show” from Jay Leno, Seth Myers will take over “Late Night.” Both shows will originate from 30 Rockefeller Plaza in NYC.

RadarOnline.com is reporting that Kelly Rowland and Paulina Rubio are now in negotiations to join Simon Cowell and Demi Lovato on “The X Factor” this fall. Jennifer Love Hewitt and Hilary Duff have been contacted, as well. Notice there are no men in the running? A source says Simon and the other producers think having Simon as the only man on the panel is the right way to go. But one thing is for sure — they need to get a judges panel nailed down soon because initial auditions have already been held in LA, NY, New Orleans and Charleston. Another round of auditions is being held tomorrow in Denver and “The X Factor” is also accepting online auditions.

Lots of speculation that Beyonce is pregnant with baby number two! At the Met Gala last week, Beyonce wore a Givenchy gown belted high above her natural waist, which some say was done on purpose to camouflage her growing belly. And there are a few pictures popping up on blogs showing Beyonce performing on stage with a little bump working. Beyonce gave an interview recently where she said her 16-month-old daughter Blue Ivy needs some company. When asked about a timeline for that, she answered, “At some point, when it’s supposed to happen.”