45 photos that show Kourtney Kardashian's amazing transformation through the years

Later that month, at a Vegas party hosted by her sister, Kim, she wore this green and black dress that had a mesh modesty panel, pairing it with a black clutch and silver heels.

Kourt showed up to Kim's birthday party in L.A. wearing this white kimono dress with a plunging neckline, accessorising with a studded clutch and black strappy shoes.

For the grand opening of a Hollywood sushi joint, Kourtney kept it casual in a pair of flared, light-wash jeans and a neutral silk blouse.

Silk and flares were kind of her thing, actually. Not long after that, she was spotted in L.A. wearing this lilac and lace cami, paired with dark-wash bell-bottoms and bug-eye sunnies.

By the next month, Kourtney was into wearing statement dresses. Check her out in at a Las Vegas event in this purple ombre fringe mini, which she wore with black platform Mary Janes and a gold bracelet.

The following year, she was still at it with an eye-catching patterned sheath, paired with an even more attention-grabbing oversize fold-over clutch.

Kourtney stepped off a jet in a patterned blazer dress with a large black belt and coordinating heels, which she accessorised with a gold Louis Vuitton handbag.

Pregnant with her first child, Mason, Kourtney chose a form-fitting olive sheath, black pumps, and a statement gold necklace for the launch of Rich Soil's clothing collection at then-popular store Kitson in L.A.

The new mum made an appearance at an event in NYC wearing this head-to-toe leather look with super strappy heels.

At a QVC event in New York, Kourtney worked the wide-leg pants trend in a pair of black trousers worn with an olive tank and a gold belt.

It's here where Kourtney's style journey enters a wild phase. At a Las Vegas nightclub appearance, Kourtney wore this blush mini with a popping feather collar, a quilted clutch, and black pumps.

See what I mean by wild? Kourtney was way into animal print at this point in her life. She wore these leopard-print pants with a black cardigan, coordinating pumps, and a teal necklace at a Victoria's Secret Fashion Week event in NYC.

The next month, Kourtney attended a Dollhouse book signing in L.A. with her sister Khloe, wearing a white blouse, a red skirt with suspenders, and these very distracting houndstooth tights.

The next year, while pregnant with her second child, Penelope, she attended the Elton John AIDS Foundation Academy Awards Viewing Party in West Hollywood in a much more simple look. She wore this flowing white gown with gold trim and accessorised with blingy gold bracelets, earrings, and a coordinating clutch.

Now a mother of two, Kourtney was spotted out and about in NYC wearing this polka-dot blouse, a black skater skirt, and a leather belt bag.

At the following year's Elton John Oscars viewing party, Kourtney went bold in this red floral ballgown, which she paired with black shoes and a simple gold bracelet.

While celebrating then-boyfriend Scott Disick's 30th birthday in Las Vegas, Kourtney (with a fresh set of bangs) showed up in this blue lace top and very funky feathered skirt.

She hopped on the cape-dress trend at an L.A. launch party for watch company Audemars Piguet in this hot pink number, which she styled with a black clutch and heels and a gold necklace.