Buzzmakers: Kellie Wins 'DWTS' & Janet Makes $1B

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What had ET readers buzzing this week?

1. 'Dancing with the Stars' Crowns a Season 16 Winner!

Singer Kellie Pickler, 26, and partner Derek Hough became the proud owners of the much-coveted mirror ball trophy on May 21, narrowly beating out Disney Channel star Zendaya Coleman, 16, and her partner Val Chmerkovskiy. The two couples were neck-in-neck at the top of the leaderboard for much the competition.

At first unable to hear the winning announcement when it was delivered live, Pickler jumped for joy when Hough informed her of their big achievement.

"This is amazing," said the singer with delighted shock. "Oh my god!"

The victory marks DWTS pro Derek Hough's fourth win on the show.

Click through our gallery for a look back at all the previous mirror ball champs!

2. Janet Jackson Joins the Billionaire Club

Janet Jackson has joined the exclusive billionaires club thanks to her mega-successful albums, tours and acting roles, Variety reports.

According to the publication, Jackson has raked in a total of $260 million in album sales thanks to her hit albums Control (1986), Janet (1993) and Rhythm Nation 1814 (1989), and another $81 million off music and publishing fees. Her sold-out world tours have earned her another $458 million, with an additional $81.5 million coming from tour sponsorships and licensing fees.

And let's not forget that Jackson is an actress too -- her roles in The Nutty Professor, The Klumps, Poetic Justice and For Colored Girls has banked her a whopping $304 million.

Though Jackson of course isn't the only billionaire in her marriage -- her husband, retail entrepreneur Wissam Al Mana (whom she married last year in a private ceremony), is a billionaire all on his own.

Jackson joins the exclusive list of celebrity billionaires which includes Madonna, George Lucas, Steven Spielberg and Oprah Winfrey.

3. Stars Bare Skin on Billboard's Blue Carpet

Music's hottest stars left little to the imagination as they stepped onto the 2013 Billboard Music Awards' blue carpet on Sunday, May 19, in Las Vegas, Nevada.

From Taylor Swift's blue, barely-there minidress to Selena Gomez's sexy neon frock, click here to see all the City of Sin styles!

4. Barbara Walters' Daughter Arrested

Jacqueline Danforth, who was adopted by Barbara Walters and then-husband Lee Guber as an infant, was arrested on suspicion of DUI on Sunday, May 19.

According to her arrest report, the 44-year-old was stopped in Florida and taken into custody with bond set at $1,000. This was her first known DUI offense as an adult, according to the report.

Danforth's troubled childhood was one of the focal points of Walters' biography. In a 2003 interview with Dateline, Walters revealed that Danforth became a runaway at 15, but Walters kept the news quiet to avoid headlines.

Walters explained that the news attention "might have made things worse," going on to add, "I didn't know where she'd run to."

The arrest news comes after Danforth began to clean up her life in part by running a program for troubled girls, according to USA Today.

5. Christina Aguilera's Stunning Weight Loss

Christina Aguilera stunned viewers of the 2013 Billboard Music Awards when she took to the stage to reveal a dramatic weight loss.

The petite singer, who sang Feel This Moment with Pitbull, wore a black miniskirt and a tight-fitting black top, accentuating her newly toned figure.

Looks like she'll be in fighting shape for her return as a coach for season five of The Voice!

Click here to see her amazing transformation.