First award of the nightpublished at 01:41 Greenwich Mean Time 23 February 2015
Best supporting actor - JK Simmons, Whiplash
Image source, HandoutSummary
Eddie Redmayne wins best actor
Julianne Moore wins best actress
Birdman wins best picture and best director
Grand Budapest Hotel and Birdman win four awards each
First award of the nightpublished at 01:41 Greenwich Mean Time 23 February 2015
Image source, HandoutPostpublished at 01:39 Greenwich Mean Time 23 February 2015
Neil Patrick Harris has pointed out (albeit indirectly) that this year's best film nominees collectively grossed one of the lowest ever totals.
Altogether, they grossed $600m - American Sniper was the most successful, accounting for more than $300m.
Postpublished at 01:38 Greenwich Mean Time 23 February 2015
Tim Masters
Entertainment correspondent in Los AngelesNeil Patrick Harris's opening Moving Pictures song brought a touch of pure Broadway to the Oscars. It got a round of applause in the press room.
Postpublished at 01:36 Greenwich Mean Time 23 February 2015
The Oscars - where else can you get dancing Stormtoopers?
Postpublished at 01:35 Greenwich Mean Time 23 February 2015
Yay for Jack Black! Singing his own ranty-song about film in great comedy fashion.
Image source, AFP/Getty ImagesPostpublished at 01:34 Greenwich Mean Time 23 February 2015
Now Anna Kendrick is getting in on the action dressed in her Into the Wood's costume.
Image source, AFP / GettyPostpublished at 01:33 Greenwich Mean Time 23 February 2015
We kick off with a Tony-style song and dance number with Neil Patrick Harris singing about bitter Oscars losers and a tribute to movies in all their glory.
Postpublished at 01:31 Greenwich Mean Time 23 February 2015
Neil Patrick Harris's opening line: "Tonight we honour Hollywood's best and whitest - sorry brightest."
Postpublished at 01:30 Greenwich Mean Time 23 February 2015
And we're off!
Heading inpublished at 01:29 Greenwich Mean Time 23 February 2015
Image source, Getty ImagesBest actress nominee Felicity Jones prepares to take her seat...
Get involvedpublished at 01:29 Greenwich Mean Time 23 February 2015
Keep tweeting and emailing us your views on the ceremony and winners as they're announced.
Dresses: The verdictpublished at 01:27 Greenwich Mean Time 23 February 2015
There has been plenty of talk on Twitter about this year's outfits - good and bad.
Mixed reactions to Jennifer Lopez's nude gown - Red Magazine tweets, external: "J-Lo taking princess dresses to a whole new level."
But TheFrisky aren't so keen, external: "'She looks like she's covered in a giant piece of salmon flesh.' — my brother on J. Lo's dress."
Gwyneth Paltrow's gown is getting no love from Grazia Magazine, external, which tweets: "Ermmm Gwyneth is dodgy bride meets prom queen."
PA Showbiz tweets: ", externalMarion Cotillard has a dress befitting a best actress #Oscars2015 nominee."
Image source, AFP/GettyFashion Foie Gras tweets, external: "Rosamund Pike wins it for best shoe/skirt slit pairing. Love this. Such a great ensemble from top to toe."
Washed uppublished at 01:27 Greenwich Mean Time 23 February 2015
Image source, AFPBritish nominee Keira Knightley - who is pregnant with her first child - joined Lady Gaga on the red carpet.
Gaga's dress took 25 people 10 weeks to make. Judging by the gloves, she's expecting to have to do the washing up after the ceremony.
Postpublished at 01:26 Greenwich Mean Time 23 February 2015
Five minutes to go! The actors are all in their seats and we're about to begin.
Sequin snugglepublished at 01:20 Greenwich Mean Time 23 February 2015
Image source, Getty ImagesJennifer Aniston and best supporting actress nominee Emma Stone shared a cuddle on the red carpet.
Newlywedspublished at 01:19 Greenwich Mean Time 23 February 2015
Benedict Cumberbatch, who brought his new wife Sophie Hunter, also wore white to the ceremony.
Image source, APBelt uppublished at 01:16 Greenwich Mean Time 23 February 2015
Image source, Reuters/Getty ImagesJennifer Lopez and Nicole Kidman were some of the last guests to walk the red carpet.
Their dresses drew mixed responses from the fashion police.
Red carpet arrivalspublished at 01:15 Greenwich Mean Time 23 February 2015
If you want to catch up on more pictures of the stars striking their best poses, have a look at our dedicated picture gallery.
Wear this dress, you willpublished at 01:10 Greenwich Mean Time 23 February 2015
Willow Bay, the wife of the Walt Disney Company boss Bob Iger, came dressed apparently ready to prompt Disney's next big film. Yes, that is Yoda. On a dress.
Image source, ReutersMore arrivalspublished at 00:59 Greenwich Mean Time 23 February 2015
Best actor nominee Steve Carell brought his wife, Nancy, to the ceremony.
Image source, Getty ImagesGwyneth Paltrow, pretty in pink.
Image source, Getty ImagesRita Ora will be performing at the ceremony.
Image source, Reuters