The concert will be hosted for the fourth time by Sheridan Smith, who will be joined by comedians Alan Davies and Jenny Eclair. West End legend (and previous winner) Michael Ball will also be on hand to speak on behalf of this year's adopted charity, Stage One.
For the first time acceptance speeches and press room interviews will be streamed live from 7pm thanks to our video partner Kinura. To watch the live stream tune in at www.whatsonstage.com/awards and be the first to find out all of our winners.
Whatsonstage.com will be tweeting throughout the day and breaking all of the Awards news on Twitter. You can follow @Whatsonstage or join in the Awards conversation on the #wosawards hashtag throughout the day.
Whatsonstage.com will be on Twitter throughout the day to answer any questions you might have. Answers to frequently asked questions may be found below:
When does the concert start?
The Whatsonstage.com Awards Concert starts at 7pm at the Prince of Wales Theatre (home to Mamma Mia! on Coventry Street in central London.
Can I still buy tickets for the Awards Concert?
Tickets are currently sold out however tickets may be released back to the box office during the day by the producers or returned to the box office buy other theatregoers. The Prince of Wales box office will be open from 4pm on Sunday for returns and for ticket collection.
What is the dress code for the Whatsonstage.com Awards?
The dress code for the Whatsonstage.com Awards is smart. You can see pictures of last year's Awards to see what our winners and nominees were wearing on the night. The event is not formal, but instead think of it as attending a first night at the theatre.
Where can I watch live streaming of the Awards?
Will I be able to watch the performances at the Whatsonstage.com Awards online?
We are unable to broadcast the performances at the Awards, but will streaming all of the acceptance speeches and backstage interviews. You will be able to see the performances in our highlights video which will be posted on both Whatsonstage.com and our Awards site on Monday morning.
Are there any restrictions on who can watch the Awards streaming?
No, the Awards will be accessible to anyone, no matter where you are. The Awards stream will be Flash video so you may not be able to watch it on your tablet computer (eg iPad). The stream will be live from 7pm when the concert starts.
How long does the Whatsonstage.com Awards Concert last?
The Awards Concert is expected to last two and a half hours, starting at 7pm and finishing at 9.30pm with a 20 minute interval. As with all one-off events the Concert may over run slightly depending on events on the night.
Who will be attending the Whatsonstage.com Awards?
No one's attendance can be guarenteed on the night, but a list of those nominees and guests expected to attend on the night are included in our recent news story.