Buzzmakers: Kelly Clarkson & Beyonce

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What had ET readers buzzing this week?

1. Kelly Clarkson: I Lost Weight For My Boyfriend

Kelly Clarkson recently debuted a hot, new figure and the singer is crediting her slimmed-down bod to boyfriend, Brandon Blackstock.

"No one wants to be untoned when you're dating someone," the 30-year-old singer tells Life & Style of her motivation to get fit and trim. "I've always fluctuated, but now I'm in a happy relationship."

While Clarkson reveals her beau (who is stepson to country legend Reba McEntire) helps her stay "more active" these days, she says the two will never, ever work out together.

"We did that once," she admits. "I don't like huffin' and puffin' in front of my man and looking all red and gross and sweaty"

2. Beyonce Shows Off 60 Pound Weight Loss at Concert

Despite giving birth to Blue Ivy Carter in January, Beyonce has been dazzling fans in her first post-baby concerts, a four-night concert series at Revel's Ovation Hall in Atlantic City, N.J. Showing off her post-baby bod in a number of revealing outfits, the superstar confessed to the audience that she had actually lost 60 pounds for the concert series.

"Y'all have no idea how hard I worked!" the 30-year-old said on stage. "I had to lose 60 pounds. They had me on that treadmill. I ate lettuce!" The Grammy winner showed off her new fighting form in four custom-made Ralph & Russo ensembles and shoes by Stuart Weitzman.

Despite the major slim down, Beyonce assured fans she won't be eating only lettuce for long. "Now tonight, I'm gonna get chocolate wasted!"

Saturday's show was quite the star-studded event as Gayle King, Michelle Obama and daughters Sasha and Malia were all in attendance. Click here for the video of Beyonce's first post-baby, high-octane performance!

3. Kathie Lee Gifford's Big On-Air Gaffe

In an interview on the Today show Wednesday morning, Kathie Lee Gifford asked Martin Short about his current relationship with his wife, apparently unaware that he's been a widower since 2010.

"He and Nancy have got one of the greatest marriages of anybody in show business," said Kathie Lee. "How many years now for you guys?"

"Thirty-six years," Martin replied kindly.

During a commercial break, Martin brought the blunder to the TV host's awareness, prompting her to give an on-air apology as well as this tweet: "I send my sincerest apologies to @MartinShort and his family. He handled situation w/enormous grace and kindness and I'm so grateful."

The actor's late wife passed away after a battle with ovarian cancer. The couple had three children together.

4. Glamour Holds 2012 'Women of the Year' Awards

Hollywood's loveliest ladies went glam for the Glamour Women of the Year Awards on May 29, 2012 in London, England. Browse through our gallery to see stars like Lily Collins, Jessie J, Kelly Rowland, Naomi Watts and more as they wow the red carpet!

5. Police to Interview Bieber About Alleged Battery

Detectives from the Malibu-Lost Hills Station tell ET that they are "continuing their investigation into the allegation of the battery involving Justin Bieber."

Detectives continued, saying that they have "interviewed the alleged victim, will interview witnesses and are planning to interview Mr. Bieber."

A reported altercation occurred between Justin Bieber and an unnamed photographer was confirmed by Lieutenant Robert Wiard of the Calabasas Sheriff's Department. The incident reportedly happened at 12:45pm, Sunday, May 27 at Calabasas Commons. The photographer taken away by ambulance and has filed a police report, claims that allegedly Bieber engaged in a physical altercation with him when he was attempting to take a photograph.

Subsequently, reports say that the photographer called 911, however Justin had already left by the time responding officers arrived. The police report also claims that girlfriend Selena Gomez was present at the time of the alleged altercation.

The sheriff's department is reporting that currently Bieber is considered a person of interest, and not a suspect in the case.