After topping the charts two weeks ago with “What’s My Name?“, Rihanna reclaimed the top spot from Far East Movement with her lead cut, “Only Girl (In The World)” from her “Loud” album. It’s the first time in Billboard Hot 100 history, that a lead single hit No. 1 after the second single did. “Only Girl” is the Bajan artist’s ninth No. 1 track.

Proving she’s a singles artist and not so much a record artist, Rihanna’s first week sales of her latest CD, “Loud” debuted in third place behind Susan Boyle and “America’s Got Talent’s” Jackie Evancho’s respective albums. Despite all the hype, Rihanna only moved 207,000 copies of “Loud”. As low as that number sounds, it still marks her best U.S. chart sales debut to date. She’ll have to haul some major ass if she intends of beating her previous best effort when “Good Girl, Gone Bad” sold 2,616,000 in the US.

As mentioned earlier, Rihanna is the first artist ever to have her lead single top the charts after her official second single. “Only Girl” is her ninth single overall and her fourth in 2010. It makes her the first female artist ever to hit the top spot four times in a calendar year. The last artist, male or female, to achieve this feat was Usher in 2004.

While some may argue, including me, that her collaboration with Eminem shouldn’t really count to her overall tally, Billboard does… and that’s who really matters, I guess. Even if you take out her collaborations, she’s still at an impressive seven No. 1 hits in her relatively short career.

With this latest achievement, Rihanna can now boast the most number ones in the new millennium. She previously tied with Usher with 8 apiece. At just 22-years-old, she ranks fifth for the most chart toppers among female artists and tied at tenth overall.

In other Hot 100 news, last week’s No. 1 artist, Far East Movement drops to No. 3, while Pink’s “Raise Your Glass” takes runner-up honors at No. 2. Fourth and fifth slots go to Ke$ha’s “We R Who We R” and Nelly’s “Just a Dream” respectively.

With so many No. 1 hits under her belt, many think her overall album sales are relatively lacking. Has the industry changed so much in the past few years, that it’s all about a singles market? Why are artists like Taylor Swift and Susan Boyle who don’t hit the Billboard 100 often, still able to move massive numbers their first week out. Post your comments and thoughts below.