Justin Bieber has 6.3 million Twitter Fans, 1 billion YouTube views, and a line of nail polish

Call it Bieber Fever, or, Beibermania.

The Canadian pop star Justin Bieber has 6.3 million Twitter followers, 16.5 million Fans on Facebook, and has been viewed 1 billion times on YouTube. He's the highest-paid 16-year old entertainer in the world (Vanity Fair estimates earnings of $100 million since he was discovered a year ago).

As for merchandising, there is the Justin Bieber Doll, and an autobiography, "Justin Bieber: First Step 2 Forever: My Story,"

Justin Bieber's celebrity is hot.

Attesting to the devotion of his heavily ‘tween-to-mom fan base, and their desire to own just-about-anything-Justin,  Bieber has launched a new collection of nail polishes at Walmart that are inspired by his hit songs. Some of Beiber's 14 shades of beauty treatments are called  "One Less Lonely Glitter" (lavender), "Prized Possession Purple" (grape), "Give Me The First Dance" (silver), "Me + Blue" (dark blue), "OMB!" (bright red), and "Step 2 the Beat of My Heart" (heart-shaped glitter). The line is scheduled to expand to Target Stores and Sears in February.

“A lot of [Justin's] songs are about making girls feel good,” Suzi Weiss-Fischmann, the brand’s executive vice president and artistic director, says, “He sees that nail polish really makes girls feel good.”

The initial six launch colors of the One Less Lonely Girl Collection quickly sold out at more than 3,000 Walmart stores nationwide.