Prince William
Prince William looks dapper in a recent engagement he attended. Pictured: Prince William attends the "They Shall Not Grow Old" premiere at the 62nd BFI London Film Festival on Oct. 16, 2018 in London. Getty Images/Daniel Leal-Olivas

Prince William stepped out solo to attend a movie premiere.

On Tuesday, the Duke of Cambridge looked dapper when he arrived at the premiere of Peter Jackson's first war film, "They Shall Not Grow Old." In the photo shared by Daily Mail, Prince William wore a navy suit and maroon tie. It was a similar tie to the one he wore in Hamburg, Germany that he recycled when he made his first joint engagement with Kate Middleton after her maternity leave.

Prince William appeared to be in high spirits at the BFI London Film Festival. He even joked about his last encounter with the director.

"You tried to get me in an orc suit," the duke said (as quoted by Express).

Prince William visited the director's aviation heritage center in New Zealand a few years ago. It is filled with First World War memorabilia, which reflects his passion for the period. However, Jackson said that his film is not a genuine historical story. It just gives an impression of what it feels like to be a soldier.

"The amazing thing is after listening to 600 hours of interviews and probably 250 different men - it's amazing how common their story is. I now have a greater understanding of what my grandfather would have gone through just because I listened to all these other people talking," Jackson said.

"I hope he likes it, he came down to New Zealand a few years ago and visited our First World War plane collection - he wanted to grab a plane and go up flying - he certainly has an interest in this historical area," Jackson said about Prince William's visit.

Prince William's outing came just hours after he became an official uncle for the first time via his wife's sister, Pippa Middleton, who gave birth to a boy on the same day. On Monday, Prince Harry and Markle also announced that they are expecting their first child together.

Due to the baby news, royal fans are speculating if Prince William and Middleton will have another child. However, according to sources, it is unlikely for the couple to have a fourth baby.

"I can't imagine Kate will want any more given the ordeal that she goes through every pregnancy. I should think that three children are enough," an insider told People in 2017. "Carole will be absolutely over the moon. The locals are all very happy for her and the family. Kate is a really lovely girl so we are all very happy for her."