The Celtic League champions have sold more than 15,000 tickets for tonight's friendly match against London Wasps and are confident of beating Swansea City's stadium record of 16,733.
More than 3,000 tickets were sold on Tuesday alone after it was announced that Charlotte Church - girlfriend of Ospreys star Gavin Henson - would be singing before the game.
Ospreys managing director Mike Cuddy said: "We've had an absolutely phenomenal sales period over the last few days and to already have the highest-ever crowd in the history of regional rugby in Wales is amazing."
The Webb Ellis Cup visited Lampeter on Monday to recognise the fact that the town is celebrating a major milestone as it is believed the first ever game of rugby played in Wales, was in fact played in Lampeter 150 years ago.
Cardiff Blues U18 Girls will go into Sunday's Gemau Cymru with an extra spring in their step after Welsh internationals Elinor Snowsill and Philippa Tuttiett offered some last minute tips at a training session earlier this week.
Rob Howley and Josh Lewsey addressed more than 250 community club coaches and referees at the first WRU National Community Conference on the weekend. The volunteers benefitted from coaching masterclasses and workshops in a bid to connect all levels of the rugby pathway in Wales.
UEFA has today confirmed the Football Association of Wales (FAW) has been successful in its bid for the Millennium Stadium to host the 2017 UEFA Champions League Final on Saturday 3rd June, 2017 (kick-off: 19.45hrs GMT).