Watch: Live from the WhatsOnStage Awards red carpet
Ahead of this year's ceremony, Rent star Lucie Jones and WhatsOnStage deputy editor Ben Hewis chatted to whole host of Britain's biggest theatre stars on a Facebook Live broadcast.
They chatted to celebrities including Jamie Parker and Jack Thorne, Carrie Hope Fletcher, Emma Williams, Ian Hallard and Mark Gatiss.
Keep up to date with everything happening at tonight's awards on the WhatsOnStage Twitter and using the hashtag #WOSAwards.