The "Fab Four" take centre stage, Kate prepares for baby - and the wildest Harry & Meghan wedding rumours

Summary: Go behind the scenes of Meghan Markle's first engagement with William, Harry and Kate in the first episode of On Heir. Royal experts and hosts Omid Scobie and Emily Andrews take a look at the success of the Royal Foundation and how Meghan has been welcomed so warmly into the family. On Heir also peeks into Duchess Kate's busy diary and discuss why she isn't quite ready to put her feet up before the birth of her third child in April. And find out why Camilla has decided to join Charles at the last minute on his upcoming tour to Australia. Plus, will Meghan Markle wear McQueen as she marries Harry in May? And are the Spice Girls really going to perform at the reception? Omid and Emily dig through the latest royal wedding headlnes to separate fact from fiction. Subscribe now for the latest updates on all your favourite royals and send in your questions on Twitter using the hashtag #OnHeir.