Fashion: A diamond ring? Are Liam Hemsworth, Miley Cyrus engaged? - Los Angeles Times

A sparkling diamond spotted on Miley Cyrus' left ring finger Saturday night started tongues wagging about whether she and beau Liam Hemsworth of "The Hunger Games" are engaged. A source described as "close to the couple," who have been dating since 2009, said they aren't. Time will tell. But it always triggers rumors for a single celeb to put a diamond on that finger. Cyrus and Hemsworth were attending Muhammad Ali's Celebrity Fight Night XIII in Phoenix. [People]

A galaxy of actors and comedians (and a few singers, too) belted out showtunes at last week's "A Night at Sardi's" 20th annual fundraiser for the Alzheimer's Assn. Among those taking the stage were Kristen Bell of “House of Lies;” Zachary Levi of “Chuck”; Melora Hardin of “The Office”; Josh Radnor of “How I Met Your Mother”; Marilu Henner of “Unforgettable”; Jon Lovitz of “Saturday Night Live”; Wayne Brady of “Whose Line Is It Anyway?”; and Lamorne Morris of “New Girl.”  An appropriately costumed cast of "The Big Bang Theory" sang "Let the Sunshine In" and "Aquarius" from "Hair." [Society News LA]

A new fashion app for the iPhone launches Monday and will allow users to post and share photos of clothing along with purchase information. The app, called Trendabl, is described as similar to Twitter but "tailored to fashion." Individuals can share info with friends, and celebrities, bloggers and fashion labels can use the app to promote themselves. Reportedly among those already signed on are Whitney Port, Mary-Kate and Ashley Olsen, Nicky Hilton, Barney's New York, Diane von Furstenberg, Brad Goreski, Michael Kors and Current/Elliott. [WWD]

Bethenny Frankle has introduced a new product line, Skinnygirl Beauty, encompassing creams, lotions, scrubs, cleansers and a little makeup. It's available at Wal-Mart and there are already plans to add more products later this spring. [People]

Kim Kardshian says she plans to beef up security after last week's "flour-bombing" incident, and after thinking about it, may press charges against her attacker. Initially she had said she wouldn't bring charges, but she has realized it would be not good for people to think they can get away with such things. [Styleite]

Fashion retailer Bebe has launched a bridal line. [WWD] (Subscription required.)

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Photos: From top, Liam Hemsworth and Miley Cyrus backstage Saturday during Muhammad Ali's Celebrity Fight Night XIII, at the JW Marriott Desert Ridge Resort in Phoenix, Arizona. Credit: Michael Buckner/Getty Images for CFN

The cast of the "Big Bang Theory," including Kunal Nayyar, Simon Helberg, Melissa Rauch, Kaley Cuoco, Mayim Bialik, Johnny Galecki and Jim Parsons in a "Hair" medley. Credit: Jason Merritt/ Getty Images for the Alzheimer's Assn.