The live half-time entertainment will be beamed across the UK as part of the BBC's Children in Need Appeal and Stephen Jones has urged fans to get hold of their own BBC Cymru Wales beanie hats for the Millennium Stadium showdown.
"Looking up from the Millennium Stadium pitch to be met by 74,500 cheering fans is a special moment for all international rugby players and it means a lot to me and all of the team when we experience the support of the Welsh crowd," said the former British & Irish Lions fly half.
"At Wales v Fiji next month, fans will not only be backing the boys but also supporting a worthy cause and raising money for disadvantaged children if they get themselves a special Children in Need beanie.
"It would be great to look up and see red Pudsey hats all around the Stadium and I'm sure that with Alex Jones presenting a fantastic live show at half-time and some great rugby on the pitch, the fans will have a great experience when Wales face Fiji on Friday 19 November."
Welsh rugby's Friday night fixture against the Fijians, which traditionally attracts families and groups of children due to the discounted rate available for under 16s, is guaranteed to be a great occasion, with more star-studded announcements to follow.
And there's still a chance to be part of the rugby action in Cardiff with tickets available from £20 for adults and £10 for children at www.wru.co.uk/tickets and via telephone 08442 777 888 and to personal callers at Cardiff Arms Store, 8 Westgate Street, Cardiff.
Also the WRU had offered exclusive deals for schools and juniors group bookings at Wales v Fiji, with one free adult ticket per group of eight children booked (at £10 each). To take advantage of the offer, please contact: firstname.lastname@example.org
For an extra special experience away from the crowds, official hospitality packages can be purchased from £99 per person at www.millenniumstadium.com.
Selected tickets are still available for all Autumn Series fixtures at Millennium Stadium, priced from £60 for games against Australia, South Africa and New Zealand. Visit the WRU website for further details.
The BBC Cymru Wales beanie hats in support of Pudsey are priced £6 and available from bbc.co.uk/pudseywales, or by phone at 03700 101051. (Standard geographic charges apply and calls may be included in your telecom provider's call package. Calls from mobiles may be higher.)