Postpublished at 17:00 British Summer Time 26 August 2021
Proceedings in Istanbul are due to begin any minute, but the actual draw probably won't take place straight away.
In the meantime, let's take a closer look at this year's draw.
Group A: Man City, PSG, RB Leipzig, Club Bruges
Group B: Atletico Madrid, Liverpool, Porto, AC Milan
Group C: Sporting Lisbon, Borussia Dortmund, Ajax, Besiktas
Group D: Real Madrid, Inter Milan, Shakhtar Donetsk, Sheriff Tiraspol
Group E: Bayern Munich, Barcelona, Benfica, Dynamo Kyiv
Group F: Villarreal, Man Utd, Atalanta, Young Boys
Group G: Lille, Sevilla, Salzburg, Wolfsburg
Group H: Chelsea, Juventus, Zenit, Malmo
Uefa award winners announced during CL draw
Jorginho wins Uefa's best men's player award, Barca's Putellas named best women's player
Tuchel wins men's coach of the year, Barca's Cortes takes women's award
Ellie Thomason
Proceedings in Istanbul are due to begin any minute, but the actual draw probably won't take place straight away.
In the meantime, let's take a closer look at this year's draw.
THE CHAAAAAAAMPIONSSSSSSSS!
Just 89 days after Chelsea beat Manchester City to lift the Champions League in Porto, it's time for the draw for this season's group stage.
Ready? Let's do this.