Katy Perry's back-up rapper, Snoop Dogg, is set to release a reggae album under the name "Snoop Lion" later this year.

Henceforth, P. Diddy will be known as "Swag," according to CNN. Well, for one week only. Of all of Diddy's many name changes, this is the dumbest.

Jersey Shore heffalump Snooki told the Daily News that she'd like to be called by her real name, Nicole, now that she's a published author. Here are some good reasons why that will never happen.

Last May, billionaire financier Steve Schwarzman made a $100 million donation to the New York Library. The gift, which followed more than a year of blistering press coverage (remember: never let a Journal reporter into your home and allow him/her to interview the household help!) wasn't without one big string: The library's Beaux-Arts main branch on 42nd Street and Fifth Avenue had to be renamed in the Blackstone Group co-founder's honor. It's been more than a year since then, but clearly some people have no intention of ever calling it the "Schwarzman Building."

Back in December, real estate kingpin Mort Zuckerman dropped the news that he planned to change the name of Citigroup's headquarters in Midtown. ("We're tired of the fact that every time Citibank has a problem all of the TV cameras come and photograph the Citigroup Center sign on the front of our building," an exec at Zuckerman's Boston Properties confessed to a reporter at the time.) It's a done deal! Although Boston Properties didn't find another company willing to pay to stamp its name on the front of the office complex, as of June 1, it will be known as 601 Lexington Avenue. Citi won't be updating employees' business cards and stationary, which is a good thing since that will save US taxpayers from extending the bank a bailout at Kinko's. The saddest thing? It's Citi defeatist attitude about the switch: "These changes were made by the building's landlord, Boston Properties, to greatly enhance the building and reflect its prestigious tenancy," reads the Citigroup memo. Consider the lack of Citi branding on the front just such an enhancement; now you just need to buy stock in Boston Properties to take advantage of the sudden rise in property values. [Dealbreaker]