The 9 Style Rules Jennifer Aniston Follows to the Letter

By now, Jennifer Aniston is pretty much a synonym for little black dress. Whether she's on the red carpet, having a night out, or out and about in town, the 49-year-old star often wears this wardrobe staple, proving over and over again that nothing can beat a good LBD.

For a stint on The Daily Show With Jon Stewart back in January 2015, Jennifer wore a little black dress with a plunging neckline.

In June 2016, Jennifer wore a black halterneck dress for a day out in New York.

For the premiere of Mother's Day in April 2016, Jennifer opted for a black blazer dress.

Jennifer's everyday style is pretty casual, but when a special occasion arises, she doesn't shy away from showing a little skin. The actress has a knack for choosing some of the most jaw-dropping outfits we've ever seen, from dresses to pantsuits.

For the 2015 SAG Awards, Jennifer wore a vintage Galliano gown that featured a plunging neckline.

For the 21st Annual Critics' Choice Awards in 2016, Jennifer wore a delicate gray Saint Laurent gown.

At the 2015 Critics' Choice Movie Awards, Jennifer opted for a rust-colored Gucci tuxedo with a plunging neckline.

While Jennifer might be partial to a little black dress, she also very often wears black jumpsuits. Not only do they look chic and sophisticated, they're also incredibly comfortable. What's not to love?

For a screening of Office Christmas Party in December 2016, she wore a one-shoulder Brandon Maxwell jumpsuit.

In June 2016, she accessorized her jumpsuit with red heels.

In August 2015, Jennifer wore a chic Roland Mouret jumpsuit for the premiere of She's Funny That Way.

When Jennifer Aniston wants to switch things up a little, she generally turns to leather. Whether she opts for a dress, a jacket, or a top, it adds a touch of edge while sill looking sexy and sophisticated.

Jennifer wore a one-shouldered leather dress by Brandon Maxwell to the season three premiere of HBO's The Leftovers.

In September 2016, Jen wore her boyfriend jeans with a leather bomber jacket.

In April 2017, Jennifer wore a Louis Vuitton leather bustier and tailored pantsuit to celebrate the brand's collaboration with artist Jeff Koons.

Jennifer is often spotted wearing a shirt tucked into her jeans, and it's easy to see why she loves this combo so much. Whether she's running errands, going to work, or stepping off a plane, these outfits always make her look chic and sophisticated, while also being quite relaxed and comfortable.

In December 2017, she wore a chiffon blouse with bootcut jeans, a fringed scarf, gold jewelry, aviators sunglasses, and a chain-strap leather bag.

In June 2017, Jennifer wore a polka-dot blouse with ripped boyfriend jeans and espadrilles.

In September 2016, she wore a white button down shirt with flared jeans, a Gucci belt, and Burberry espadrilles.

Nothing separates Jennifer from her jeans. Over the years, the actress has proven that denim isn't just a sign of a casual look, and while she's admitted that skinny jeans aren't her favorite, she certainly knows how to rock every silhouette in the book.

In April 2015, she wore a pair of skinny jeans with a cream jumper, black blazer, and black boots.

Jen generally reserves white denim for Summer, and she styled a pair with a black cami and tan heels in June 2016.

Her slouchy, rolled jeans looked cool with a sweater and a fedora in September 2011.

Whenever she has to wrap up to warm up, Jennifer opts for a long cardigan, jacket, or coat, which elongates her figure.

For a day of traveling in July 2016, she wore a black and white waterfall cardigan with a white tee and jeans.

In December 2016, Jennifer wore a long black coat over a button down shirt, straight jeans, and ankle boots.

In April 2017, Jennifer wore a pair of black, side-striped pants with a plain white tee and white sneakers. She elevated her look by throwing on a camel-colored coat and gold-trimmed aviators.

If you still don't own a pair of white sneakers, Jennifer Aniston is here to convince you to finally give it a go. The star wears hers whenever she can, red carpet included — and she's not the only one!

For an appearance at We Day California in April 2018, Jennifer dressed down in a black blazer, jeans, and white trainers.

In April 2017, Jennifer wore ripped boyfriend jeans with simple white sneakers, a camel coat, lightweight scarf, textured crossbody bag, and aviator sunglasses.

In October 2015, she once again wore straight jeans with white sneakers — call this her uniform!

We've been watching Jennifer Aniston style tights since the '90s, but fast forward to 2018, and the actress still pulls them off IRL.

In January 2015, she used them to add stark contrast to a delicate white blouse.

For a Cake screening in November 2014, she paired tights with a plaid dress and knee-high suede boots.

For a night out in September 2011, she wore her tights with a ruched LBD and heels.