Demi Lovato spoke to MTV about this upcoming season of The X Factor, and mentioned she’s disappointed Britney won’t be back this season, but is definitely going to see her show in Vegas.

Starts at 27:22.

“What I learned from Britney is that you don’t have to change… She’s still a southern down-to-earth girl. I already knew that you don’t have to change in the industry, but even at her level of success being the icon that she is, it was really refreshing.”

Vegas promo!

The album launched May 16, 2000. It soared to top the top of the Billboard 200, selling 1,319,000 units in its first week, breaking the previous SoundScan record for the highest debut-week album sales by a solo artist (Taylor Swift almost beat Britney last year with 1.2 million units of “Red”).

“Oops!” is diamond certified and sold 20 million units to date in part thanks to writer/producer, Max Martin, who’s responsible for “Oops,” “Stronger” and “Lucky.”

Britney told MTV at the time:

“It’s kind of hard following ten million, I have to say. But after listening to the new material and recording it, I’m really confident with it.”

An untouchable pop masterpiece!

UPDATE: Britney posted about the anniversary on her Facebook, saying:

“Oops…” is now a teenager, my goodness. Happy 13th!

Speaking of… a new outtake from Britney’s Femme Fatale photoshoot (and the picture used on “B In The Mix 2″) by Randee St. Nicholas leaked!

Check out the full photo in XRAY:

The second half of Britney’s interview with Mario Lopez aired Wednesday evening.

Brit says of her boys and the industry:

“They do like attention, so I think they would probably be good in the limelight. We’re taking baby steps right now as far as agencies and stuff go, but they’re little comedians, so we’ll see.”

Plus, check out her reaction to finding out Mario plays a Smurf in Smurfs 2!

Christina Tweeted:

“On set shooting music video with @Alexoficial for #HoyTengoGanasDeTi”

Christina needs to stop stalking our Britney and be more original! Just kidding and she looks awesome.