The stars shunned flamboyant catwalk trends and instead opted for classic styles, harking back to the golden age of movie stars.
Some of the most eye-catching dresses of the night were effortless nude, while black and navy was also a hot choice.
Best Supporting Actress winner Lupita Nyong'o, 31, continued her rise to the top of the style charts with a stunning pastel mint blue custom-made halter neck dress by Prada. The cut-to-the-navel trend was also seen on Kate Hudson, who flew the flag for the 1980s in a fabulous big-shouldered Versace gown.
Angelina Jolie shunned the tux following her masculine outing at the Baftas and opted for a glittering column dress by Elie Saab.
Hustle star Amy Adams chose a simple navy Gucci dress, while Sandra Bullock also plumped for navy with Alexander McQueen.
Jennifer Lawrence brought a welcome pop of colour to the event with an orange red peplum gown by Dior, while Penelope Cruz wore baby pink Giambattista Valli Couture.
Although the celebrities have all the top fashion designers on speed dial, it is possible to get the look on a smaller budget.
Plenty of high street stores are choosing to showcase Academy Award-worthy outfits.
So whether you are preparing for a spring wedding or an exciting awards do, there is a way to work celebrity style.
GOLD DRESS, £230, NO 1 JENNY PACKHAM, DEBENHAMS
We can't promise Brad - but here is some pure Angelina glamour with this beautiful sparkling gown.
SAMANTHA MINT GREEN FULL LENGTH DRESS, £120, PHASE 8
Rock the plunging neckline with this gown, which will flatter every bodyshape.
NINA SEQUIN JEWELLED FULL LENGTH DRESS, £395, PHASE 8
Channel Cate Blanchett - and the iconic Oscar award itself - in this jewelled number.