FLASHBACK: Britney Spears, Selena Gomez & Kendall Jenner talk teenage fame at the Teen Choice Awards

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FLASHBACK! Selena Gomez, Kylie Jenner, and Britney Spears Talk Teenage Fame at the Teen Choice Awards

From Britney Spears to Selena Gomez to Kendall Jenner, the red carpet at the Teen Choice Awards has always been the place to see some of your favorite young celebs.

To get ready for this year's big show, let's rewind to a time when today's biggest superstars were a bit more baby-faced.

In 1999, Britney was brand new on the scene, and the 17-year-old was giddy about performing a medley of her singles "Sometimes" and "Crazy" in front of the screaming crowd.

PHOTOS: Britney Spears Through the Years

"I'm always nervous before I perform so, but it's a good nervous energy," Britney told ET at the time.

She also opened up about her meteoric rise to fame, explaining, "Everything happened so fast. I'm just taking it one day at a time but I'm having the time of my life."

See the 2005 Teen Choice Awards red carpet style:

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Fashion at the 2005 Teen Choice Awards
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FLASHBACK: Britney Spears, Selena Gomez & Kendall Jenner talk teenage fame at the Teen Choice Awards

Jessica Alba, then 24, was nominated in three categories in 2005 -- Choice Movie Actress for "Sin City," Choice Hottie and Choice Red Carpet Icon -- and she dressed to impress in an empire-waist floral minidress over flared denim.  

(AP Photo/Matt Sayles)

Hilary Duff, co-host of the awards show, rocked an edy red minidress with a velvet bust and bubble skirt (haven't seen one of those in a while)! Black sandals and a gothic cuff completed the 18-year-old's look.

(AP Photo/Matt Sayles)

Amanda Bynes was a cutie in a red midi-dress with black accessories. The fresh-faced teen was hot of the heels of "What A Girl Wants" and her show "What I Like About You."

 (Photo by Jon Kopaloff/FilmMagic)

Red was definitely the color of the moment in 2005. Amber Tamblyn, who was nominated for "The Sisterhood of the Traveling Pants," rocked a crimson halter dress to the event with a plunging neckline and a gold chain necklace.

(AP Photo/Matt Sayles)

Eva Mendes opted for a classic silhouette that still looks current today. The then-31-year-old actress tapped into the pink hues of in her dress with carnation-pink sandals and rosy cheeks. 

(AP Photo/Matt Sayles)

Ashlee Simpson rocked a casual jersey dress with a gold chain-linked necklace with nude pumps -- and she threw in an arm cuff for good measure.  

(AP Photo/Matt Sayles)

"The O.C." star Mischa Barton was a total It-girl in 2005 -- and she looked the part in a indigo satin dress, black pumps and sleek blonde locks.

(AP Photo/Matt Sayles)

"Choice Hottie" Rachel Bilson opted for a romantic midi dress with a thick black belt and oxblood slippers.  

(AP Photo/Matt Sayles)

Gwen Stefani and Gavin Rossdale, who recently announced their split, were happy as clams in 2005. The "No Doubt" frontwoman and the "Bush" singer looked like total rockstars on the red carpet.  

(AP Photo/Matt Sayles)

Rachel McAdams was ahead of the times in a black peplum mini.

(Photo by Jon Kopaloff/FilmMagic)

Ryan Reynolds has definitely cleaned up in the last 10 years. The "Just Friends" star looked like he rolled out of bed in black pants, a wrinkled shirt and Converse -- not to mention serious bed head! 

(Photo by Jon Kopaloff/FilmMagic)

Mariah Carey killed it in light wash denim and a midriff-baring mauve gypsy top and tight curls.

(Photo by Jon Kopaloff/FilmMagic)

Chad Michael Murray totally missed the mark in an ill-fitting gray suit, untucked pink shirt and sloppy tie.  

(Photo by Jon Kopaloff/FilmMagic)

Eva Longoria glowed in a seafoam satin halter dress and nude sandals.  

(Photo by Jon Kopaloff/FilmMagic)

"Too Little Too Late" JoJo rocked a sexy purple number with a corset top and heels. On-trend sideswept bangs completed her look.

(Photo by Jon Kopaloff/FilmMagic)

"Gilmore Girls" star Lauren Graham, a.k.a. the coolest TV mom ever, rocked flared dark denim, metallic pumps and a bustier-babydoll hybrid top. 

(Photo by Jon Kopaloff/FilmMagic)

Paris Hilton rocked a flirty sundress with a woven bodice to the event. Metallic sandals were a solid choice, but her plaid shoulder bag left much to be desired.

(Photo by Jon Kopaloff/FilmMagic)

Where do we even begin? The Black Eyed Peas pulled up tot he red carpet in various kooky ensembles, from argyle to stripes, bucket hats and more. 

(Photo by Jon Kopaloff/FilmMagic)

Alexis Bledel was a total cutie in a red and white printed dress and nude pumps.

 (Photo by Jon Kopaloff/FilmMagic)

Anna Kournikova flaunted her flat abs in a lace-detailed cropped blazer, low-rise denim and pumps.

 (Photo by Jon Kopaloff/FilmMagic)

Blake Lively looked perfectly beachy in a canary yellow minidress and breezy waves. 

(Photo by Jon Kopaloff/FilmMagic)

Raven-Symoné rocked a ruffled black skirt, white shirt and a printed scarf wrapped cummerbund-style around her waist.

(Photo by Jon Kopaloff/FilmMagic)

Brooke Hogan looked about ready for bed in a a pink bra top and satin pants with tiny pink bows decorating the waistband.

(Photo by Jon Kopaloff/FilmMagic)

"American Pie" star Shannon Elizabeth looked sweet as pie in a fun, printed strapless midi dress and gold sandals. Not a bad look!

(Photo by Jeff Kravitz/FilmMagic)

Like Jessica Alba, Hayden Panettiere opted for the minidress over jeans look -- but she paired her flared denim with blue cowboy boots. Teal shell dangling earrings -- so in at the time -- completed her ultra-2000s ensemble.

(Photo by Jeffrey Mayer/WireImage)

She bangs! She bangs! Infamous "American Idol" alum William Hung made an appearance at the award show in white pants, a floral short-sleeved button down and slip-on sneakers.

(Photo by Jeffrey Mayer/WireImage)

Check out those frosted tips on "On The Way Down" singer Ryan Cabrera!

(Photo by SGranitz/WireImage)

This just proves Nick Cannon is ageless! The "America's Got Talent" star looks just like his former self today, albeit with more refined style.

(Photo by SGranitz/WireImage)

We've never been a fan of Ryan Gosling's buzz cut, and we're definitely not a fan of his disheveled all-black look -- but we give him major props for his philanthropical Darfur T-shirt.  

(Photo by Jeffrey Mayer/WireImage)

It wouldn't be the 2000s without a wife beater, super-cuffed jeans and leopard print. Go get 'em, Robin Antin!

 (Photo by SGranitz/WireImage)

Kristen Bell looked fab in a gold spaghetti-strap dress with a gathered waist and gold accessories. Red nails and an updo rounded out her look.

 (Photo by Jeff Kravitz/FilmMagic)

Can you believe Emma Roberts was only 14? The cutie rocked a fun polka-dot dress and pink kitten heels.  

(Photo by Jeff Kravitz/FilmMagic)

Haylie Duff went for a flapper-inspired style with a satin and lace minidress and long pearls.

(Photo by Jon Kopaloff/FilmMagic)

We're not sure what look Jim Carrey was going for in corduroys, a yellow tee and a puce green leather jacket.

(Photo by SGranitz/WireImage)

Sandra Bullock was hot off the heels of her "Miss Congeniality" franchise success, and looked like a total rocker in jeans, a band tee and black blazer.

(Photo by SGranitz/WireImage)

Before Wilmer Valderrama started dating Demi Lovato, he was known as the beloved character Fez on "That '70s Show."

(Photo by Jon Kopaloff/FilmMagic)

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In 2008, another young entertainer was still getting used to the idea of superstardom. Sixteen-year-old Selena spoke with ET, and opened up about how strange it felt to be in the media spotlight.

PHOTOS: 22 Times Selena Gomez Looked Too Pretty For Words

"It's a little weird, being 16 and going outside and wanting to have breakfast with my family and there's paparazzi following us, it's a little weird," Selena admitted. "But it's something I guess that I'm gonna get used to."

For Kendall Jenner, being in front of the cameras wasn't anything new even when she was younger. At the 2010 awards show, a 14-year-old Kendall opened up about dealing with criticism over a bikini-clad photo shoot some felt was inappropriate.

"I'm not really focusing too much on what people are saying," Kendall explained. "I'm almost ignoring it because I'm happy with my photos. I don't regret them at all."

PHOTOS: Kendall Jenner Takes Over the Runways

Seeing how her career in modeling has flourished, it seems Kendall's persistence paid off for her.

Check out the Teen Choice Awards this Sunday at 8/7c on Fox.

WATCH: FLASHBACK: 17-year-old Britney Spears Says Entertainment Industry Has Not Affected Her At All

Britney Spears at 17: Entertainment Industry Has Not Affected Me At All

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