These Were the Most Glamorous Beauty Looks at the 2020 Oscars — See Them Now

Grammy-winning singer Billie Eilish arrived at the 2020 Oscars with not one, but two, eye-catching beauty trends. The star debuted mile-high black diamond-studded stiletto nails and a Chanel hair accessory that wound through her loose bun.

Billie Eilish's long black nails were hard to miss.

Notice the small diamonds on the tips of each of her nails.

The classic Chanel logo was spotted in the star's hair, keeping her chic loose bun in place.

From every angle, Billie Eilish rocked her killer beauty look.

Lucy Boynton always graces award shows with a gorgeous beauty look, and the Oscars red carpet was in for a treat when the actress arrived with a pearl-lined part.

The Politician actress wore her hair in soft waves, drawing attention to her pearl-embellished side part.

Her bold red lip and extralong top and bottom lashes made the star look better than ever.

Lucy Boynton's pearl part-piece blended in with her blond hair in the most tasteful way.

Her long lashes and tousled curls were the perfect complement to her dreamy Oscars look.

Cynthia Erivo is no stranger to the red carpet, and her 2020 Oscars nail look was off the charts. She showed up to the Oscars with a slightly modified version of the french manicure done by artist Gina Oh.

The star's nails featured a design of Vincent Van Gogh's classic "The Starry Night" painting on one hand while the other hand showed an ode to Harriet Tubman and the North Star.

Notice the sparkling diamond details on her nails.

Cynthia Erivo's bold nails stood out against her dreamy white Versace gown.

The star blew kisses, highlighting her gorgeous manicure even more.

Bombshell actress Margot Robbie was a sight for sore eyes on the red carpet with her eye-catching red lipstick and lightly-curled waves.

The actress' shapely brows were perfectly sculpted and defined.

Her bright red lipstick gave her look a feeling of timelessness and sophistication.

Margot Robbie's hair was parted to one side with her hair tucked behind her ear.

The star's gorgeous makeup look was nothing short of perfection.

Singer-songwriter Janelle Monáe brought the heat to the red carpet with her crystal-studded ensemble and matching nails.

The star sported an all-black reverse french manicure with crystals lining her cuticles.

Janelle Monáe's sharp nails matched her stunning silver Ralph Lauren gown perfectly.

Her black nail polish was able to effortlessly highlight her diamond-studded cuticles.

Complete with sultry red lipstick, Janelle Monáe was a vision on the red carpet.

Actress Olivia Colman took the biggest beauty risk of all when she dyed her brunette hair to platinum blond just three hours before the big event. Spoiler: she pulled it off.

Hairstylist Marcus Francis and colorist Jessie Stella Verroca were the two behind her glamorous change.

Her newly dyed blond hair was as bright and beautiful as ever.

Olivia Colman's fresh color looked fabulous against her brushed-up brows and neutral lipstick.

The actress was all smiles with her pretty new hair color on the red carpet.

Zazie Beetz showed up to the show looking absolutely stunning with her curls pulled half up and curly bangs highlighting her smoky eye makeup.

The star's gorgeous hair was voluminous and full.

Zazie Beetz's curly bangs highlighted her dark eye makeup effortlessly.

She completed her look with a natural lip gloss.

From all angles, Zazie Beetz's hairstyle was a work of art.

Actress Rooney Mara looked more glamorous than ever at the 2020 show with her slicked back bun and red lipstick.

The actress's hairstyle featured a high, tight bun that made her look truly timeless.

Her high bun showed off the back of her plunging Alexander McQueen gown.

Her twisted bun featured a gorgeous lace hair tie that matched her black dress.

With bold brows and a red lip, Rooney Mara rocked the red carpet.

Little Women star Saoirse Ronan wowed the crowd when she arrived at the Oscars debuting chic baby bangs and eye-catching winged eyeliner.

Her bands were cut an inch above her brows, highlighting her dreamy winged liner.

The star wore light lavender eyeshadow to complement her gorgeous Gucci dress.

Saoirse Ronan's baby bangs had a high-low arch that reached its peak in the middle of her forehead.

Her dainty butterfly clip made her romantic red carpet look complete.

Florence Pugh's twisted take on the classic updo was chic, tasteful, and trendy.

The star's pulled back hair accentuated her bold brows and natural lip gloss.

Florence Pugh's blond hair was flyaway-free and trendsetting.

The twisted updo was striking due to its playful tone.

The intricate design featured knots, twists, and more.

Actor Timothée Chalamet stunned fans when he arrived to the show with a slicked back wet hairstyle with no curls in sight.

Hiding his curls with a bit of gel, the Little Woman actor looked sophisticated and refined.

Timothée Chalamet's hair was deeply parted to the side and tucked behind his ears.

The actor had all eyes on his curl-less locks.

Even without his playful curls, the 24-year-old star still looked fantastic.