Our brand new season of What If? kicks off with a sweet (very) little mystery guest... It’s Rosie's gorgeous new baby, Billie!

And if that wasn’t enough, we’re joined by the legendary Marti Pellow. The pop icon chats Wet Wet Wet superstardom, resilience and reinvention, plus why he still gets so excited by the stage.

Plus Marti and Lorraine talks about their stints on The Masked Singer as Wolf and Owl, as well as last year's emotional charity single supporting the Change + Check campaign to raise awareness for breast cancer.

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