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."
After two years in the international wilderness, Adi Taviner is hoping to make up for lost time when she takes part in her second Women's Rugby World Cup which kicks off in Paris next Friday where Wales take on hosts, France.
The WRU's Women and Girls legacy events - #TRY OUR GAME have proved popular this week with current players and newcomers to the game learning new skills and picking up tips from national squad players.
We caught up with Shona and Ellie from the Wales women team ahead of the start of the Women's Rugby World Cup in Paris next month at a recent women's training session to encourage and promote more women and girls to try their hand at rugby. #tryourgame
The Women's Rugby World Cup warm-up clash between Wales and USA proved bittersweet for centre Elen Evans. Despite being one of the star performers on the day on her 50th Test appearance, USA edged home 10-7 at Cross Keys.
Wales completed their Junior World Championship campaign with a victory over Samoa. Team manager Mark Taylor and No 8 James Benjamin reflect on a tournament which saw Wales win three games and lose two.