Kendall Jenner is a full-fledged supermodel these days, but before she was gracing billboards and international fashion week runways, she was just a little sister on "Keeping Up With the Kardashians" going through her most awkward years in front of millions. To celebrate her 26th birthday this month, Wonderwall.com is looking back at the best photos of Kendall in her pre-supermodel days, starting with this snapshot of a 15-year-old Kendall at the Hollywood premiere of "Burlesque" in November 2010.
Keep reading for more from Kendall's early years…
Caitlyn Jenner took her youngest kids, Kendall Jenner and Kylie Jenner — who wore matching skirts and pigtails — to the premiere of the movie "Teacher's Pet" in January 2004.
Kendall Jenner was a fresh-faced 13-year-old at the "Kiss & Tell" record release party for Selena Gomez and The Scene in September 2009.
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Kendall Jenner rocked some aggressive bangs with pieces from Forever 21's Hello Kitty line at a launch party for the collection in November 2011.
Kendall Jenner joked around with older sister Kim Kardashian during a promotional photo shoot in a pool in July 2009.
Kendall Jenner tested out an edgier look, which included a purple streak in her hair, a graphic tee and snakeskin pants, at a charity event in May 2012.
In the summer of 2009, Kendall Jenner attended the ESPY Awards in a white multi-tiered minidress.
Kendall Jenner, seen here at 12, wore neon pink leggings and Converse sneakers to a concert in May 2008 accompanied by little sis Kylie Jenner, who opted for the same color scheme.
Kendall Jenner dipped her feet into the modeling world when she walked a runway for designer Sherri Hill in September 2012.
Kendall Jenner cozied up to parents Caitlyn Jenner and Kris Jenner at a fashion show in March 2007 where the then-11-year-old opted for a '70s-inspired look with a bold printed dress and a blue satin headband.
At the premiere of "The Vow" in February 2012, Kendall Jenner was the picture of sweet innocence in a white shift minidress and a prom-like updo.
At an April 2011 premiere party for the Disney movie "Prom," a 15-year-old Kendall Jenner snacked on candy necklaces with sister Kylie Jenner, who she matched in royal blue.
For a May 2009 concert, a 13-year-old Kendall Jenner wore a belted short turquoise dress and chunky boots.
Kendall Jenner — seen here celebrating her Kendall and Kylie PacSun collection in August 2013 — started to come into her own style with these leather pants, white sheer blouse and spiky neon yellow necklace.
Kendall Jenner, seen here at 18, was on the verge of becoming a top model when she attended the MTV Video Music Awards in August 2014 wearing black pants and a sheer black top over a black bralette.
Kendall Jenner filmed at The Grove in Los Angeles in August 2011 looking like a normal high school student coming from cheerleading practice.
Then-14-year-old reality TV star Kendall Jenner looked effortlessly beautiful at the September 2010 premiere of the movie "Easy A."
At the 2013 American Music Awards, an 18-year-old Kendall Jenner started to master model style in a chic white dress with cut-outs, a statement necklace and a sleek hairstyle.
In August 2012, Kendall Jenner was a magazine cover girl, but not yet a full-time model. She wore a champagne-colored minidress with a red belt and peep-toe platform heels to a Barnes & Noble store to sign copies of Seventeen.
Kendall Jenner sent her love to the cameras at the Billboard Music Awards in May 2014.
Kendall Jenner went to the Cannes Film Festival in France in May 2014 and looked mature in a black-and-white gown with diamond statement earrings.
Kendall Jenner's fashion sense at the Hollywood Style Awards in November 2011 was mature and chic for a 16-year-old.
Kendall Jenner let loose in Sydney, Australia, in a yellow bandage dress in November 2012.
Kendall Jenner looked like a chic young professional at a Teen Vogue event in loafers and a collared dress in October 2010.
Kendall Jenner, seen here with little sister Kylie Jenner at the Teen Choice Awards in August 2014, looked like the top model she would become in this white jumpsuit with flawless hair and makeup.
Kendall Jenner's long-sleeved periwinkle blue dress looked perfect with her long brown hair at a February 2012 movie premiere.
At the iHeartRadio Music Festival in September 2013, Kendall Jenner — seen here with sisters Khloe Kardashian, Kourtney Kardashian and Kylie Jenner — looked effortlessly stunning in a white tank top, black short shorts and red heels and lipstick.
Kendall Jenner looked like an elevated everygirl at an art gallery in April 2013 where she wore a basic — but not boring — black strapless dress paired with gold accessories and loose waves.
In February 2013, Kendall Jenner matched with her mom, Kris Jenner, and little sister, Kylie Jenner, in red for a New York City charity fashion show.