Prince Harry spills the beans on the upcoming royal wedding between brother Prince William and Kate Middleton, and the red-headed sibling tells "Good Morning America," "Now that she'll be becoming a family member, I'm looking forward to sort of getting [her] under my wing."

In a royal exclusive just a few hundred miles from the North Pole in Norway, Prince Harry spoke candidly with "Good Morning America"'s Bob Woodruff, saying, "She's a fantastic girl, she really is. My brother's very lucky, and she's very lucky to find my brother. I think the two of them are a perfect match."

In frigid temperatures preparing for an Arctic trek, Harry is helping to raise money for wounded vets via Walking with the Wounded. He'll be the Best Man at the wedding, and says of his speech, "I haven't written it yet. I'm doing the speech along with a couple of his friends, so I will have a few stories. I think my grandmother will be there so I'll have to be selective, as one might say, but the speech will be like any normal Best Man's speech. Between the three of us, we will make sure people know the good times and the bad times that he's had since he was a nipper."

Of father Prince Charles, Harry reports, "He's over the moon, actually. And he's had a lot to do with the wedding, which is really, really nice. He's so unbelievably busy, yet he's managed to make time to help get out the music, the processional music, which I think is fantastic. He's obsessed with his music, and Kate obviously is a girl, so I presume girls are obsessed with their music on their wedding day -- must have a book of it -- so the two of them have been slaving away, getting everything right."

And as for the specter of Princess Diana at the wedding, Harry offers of his late mother, "They'll be no doubt thinking of her. Hopefully, you know, she'll be very, very proud that the big day has come upon."

"We all thought that it was never going to happen for him," he laughs. "But it has happened, and I think everyone's going to be really proud of him. It's a big deal. It's not just a normal wedding. It's a really big decision for him to bring Kate into the family. There's obviously a huge amount of pressure from the media, from the public perception and things like that. He's done the right thing. He's waited and he's done it when he feels right. And it's a huge step."

The royal wedding takes place Friday, April 29 at Westminster Abbey in London.