Image source, Getty Images

"Thank you so much," said Julianne Moore, as the hotly-tipped actress took home the best actress Oscar after racking up prizes for her role in Still Alice throughout the film season.

"I read somewhere that winning an Oscar can lead to you living five years longer - if that's true, I'd like to thank the Academy as my husband is younger than me!"

The actress, who has been nominated four times previously, paid tribute to her fellow nominees, saying there was "no such thing as best actress".

"I'm just grateful to be able to stand up here and thank the people I love," she said.

"I'm thrilled we were able to shine a light on Alzheimer's disease. So many people with this disease feel isolated and marginalised and one of the wonderful things about movies is things are able to be seen. Hopefully this movie will be seen and it will help find a cure."

It's a thumbs up for Eddie Redmayne's best actor win on Twitter:

• Emma Watson tweets, external: "So thrilled for Eddie!!!!!!"

• Annette Rioja tweets: , external"Well deserved!! Eddie Redmayne was brilliant! ...Theory of Everything was great! WOW!"

• Cumberbatchweb tweets:, external "He's so terrified. So sweet and so gracious."

• Shannon ‏tweets, external: "Friendly reminder that we're now guaranteed another year of Eddie and his spectacular hair to present next year."

• MTV tweets, external: "Can I give Eddie Redmayne the award for cutest human ever?"

Image source, Reuters

Literally skipping and jumping for joy on stage, a delighted Eddie Redmayne said: "I don't think I'm capable of articulating how I feel - I am fully aware I am a lucky, lucky man.

"This Oscar belongs to all those people around the world battling ALS," he said. "It belongs to one exceptional family - Stephen, Jane and the Hawking children - and I will be its custodian and I will look after him; I'll polish him and wait on him hand and foot."

He paid tribute to his "partner in crime" and co-star Felicity Jones, and his "ferocious and kind director" James Marsh.

He described his Oscar as "a new fella coming to join our apartment".

Best actress - Julianne Moore, Still Alice

Image source, AP

Best actor - Eddie Redmayne, The Theory of Everything

Image source, Liam Daniel

Alejandro G Inarritu joked that wearing Michael Keaton's "tighty whities" had proved his lucky charm, after wearing Raymond Carver's shirt and Billy Wilder's tie supposedly won him the top award at the Directors' Guild Awards.

"They are tight, they smell like balls, but they worked!" he joked.

Inarritu paid tribute to his fellow nominees, scorning ego and competition.

"For someone to win, someone has to lose - but true art, true individual expression cannot be compared. Our work, as always, will be judged by time."

Image source, Getty Images

Tim Masters
Entertainment correspondent in Los Angeles

The press room broke into spontaneous applause after Imitation Game writer Graham Moore's emotional speech about trying to kill himself when he was 16 because he didn't fit in.

There's been a lot of love for the Gaga and Julie Andrews pairing:

• (Actual) Joan Collins ‏tweets, external: "Best moment of the night Lady Gaga Singing songs from Sound of Music & Dame Julie Andrews greeting her."

• Seth Meyers tweets, external: "Losing an Oscar in a category that Julie Andrews presents is as good as winning an Oscar in any other category."

• Dianna De La Garza tweets, external: "I can't believe how great @ladygaga's performance was, and #JulieAndrews loved it!! #Oscars2015 #mindblown"

• Andy Barron tweets, external: "Imagine all the heads that would've exploded if Julie Andrews came out in the meat dress."

Best director - Alejandro G Inarritu, Birdman

Image source, AFP

Collecting his award, Graham Moore said: "Alan Turing never got to stand on a stage like this and look at these faces and I do - and that's the most unfair thing I've ever heard.

"So I want to use this moment to say this - when I was 16 I tried to kill himself because I felt like I didn't belong. Now I'm standing here, so I would like this moment to be for that kid out there who feels like she's weird or different or doesn't fit in anywhere. Yes you do. I promise you do. Stay weird and different."

Birdman director Alejandro G Inarritu thanked his fellow scriptwriters Nicolas Giacobone, Alexander Dinelaris, Jr and Armando Bo as he picked up the award for best original screenplay.

"Three years ago, I invited them to follow me in a crazy idea - and because they are crazy, they did it."

Best adapted screenplay - The Imitation Game, Graham Moore

Image source, Jack English

Best original screenplay - Birdman

Jennifer Lopez has a prime spot sitting next to Meryl Streep and has posted this picture, external of her new friend on Instagram.

Image source, Instagram/JLo

Double-nominated composer Alexandre Desplat won his first Oscar for his music for The Grand Budapest Hotel, following seven previous nominations.

The Frenchman thanked, among others...his cats.

Tim Masters
Entertainment correspondent in Los Angeles

British production designer Anna Pinnock, who won for her work on Grand Budapest Hotel, told me on Friday she'd been given some time off working on the new Bond film Spectre to attend the Oscars.

Best original score - The Grand Budapest Hotel, Alexandre Desplat

Julie Andrews has just arrived on stage to a lot of excitement from the audience - especially from Felicity Jones, Meryl Streep and Jennifer Lopez.

Image source, AFP/Getty

Here's how people reacted to Common and John Legend's best song win for Glory from the film Selma:

• On their performance, Julia Louis-Dreyfus tweets, external: "Wow. Perfect. Thank u. @johnlegend @common #glory"

• Janet Mock tweets, external: "We live in the most incarcerated country in the world." #JohnLegend telling the truth at the #Oscars"

• Greg Wyshynski tweets, external: "Can't believe they revealed John Legend and Common's secret identities."

• Gary Owen tweets, external: "I would vote for @Common today if he were running for something. When he talks you cant help but listen."

Scarlett Johansson has introduced a tribute to The Sound of Music - which won five Oscars including best picture in 1966 - celebrating its 50th anniversary.

And who else could perform those four-octave-range songs?

Lady Gaga of course!

Image source, AFP/Getty