Former Pussycat Doll Ashley Roberts will join Let It Shine as a guest judge for the semi-final stage of the competition.
Ashley will join permanent judges Gary Barlow, Martin Kemp and Dannii Minogue for the second of three live shows which will air on Saturday 18th February on BBC One.
Ashley Roberts said: “I’m beyond excited to be joining Let It Shine and taking a judging seat beside the brilliant Gary, beautiful Dannii and handsome Martin.
"I’m looking forward to sharing my experiences of being in a band and I can’t wait to see what surprises the boys have in store for their live semi- final performances!”
Ashley is best known for being a member of the Pussycats Dolls who sold over 54 million records worldwide, making them one of the best-selling girl groups of all time.
With a career as a singer, songwriter, dancer, choreographer and television personality, Ashley will be able to offer stellar expertise in dancing and singing and advice for the budding performers as this week the bands will be tested on their dance ability as well as singing techniques.
In the semi-final double bill the four remaining Let It Shine bands will go head to head in a bid to impress the judges and audience at home.
The opening performance will see the remaining bands each perform a classic Take That hit, before they are joined on stage for a very special collaboration with Take That themselves, Gary Barlow, Mark Owen and Howard Donald to perform the song Shine.
Ashley is the latest guest judge confirmed for Let It Shine with Amber Riley and LuLu also making appearances.
Already announced, Ricki Lake will join as a guest judge for the first live show this weekend (Saturday 11th February at 6.55pm on BBC One) when the bands will be competing against each other for the first time.