The 25-year-old model and actress has been in the same friend circles as the British royal for many years, and whilst she hints that she hasn't been invited to the nuptials, she couldn't be happier to hear that he's ''found love''.
She said: ''I'm going to spend the day with my friends all watching it from the morning. I think any celebration of love is incredible.
''I'm really happy that he found love. You know when love just changes someone completely? He's really come so far. I'm really happy for Harry.''
The 'Suicide Squad' actress also praised 36-year-old actress Meghan, dubbing her an ''absolute babe''.
She added: ''I don't know Megan, but she seems like an absolute babe. I love 'Suits'. I can't wait to see what it's like. Look I love weddings! I love weddings so much.''
Cara is a huge fan of the royal family, and says the 33-year-old Prince's upcoming nuptials make her feel extra ''proud'' of her British roots.
Speaking to People magazine, she said: ''I think the royal family are incredible and are amazing for what they do, what they do for the world and what they stand for.''
And it isn't just Cara who has shared her love for the happy couple either, as Meghan's former 'Suits' co-stars Gina Torres, Sarah Rafferty and Rick Hoffman - who have all been invited to the bash - all appeared on television this week to gush over the upcoming wedding.
Rick claims he was the first person the former actress told about their romance and he couldn't believe she was going to join the royal family.
Asked about his reaction, he said: ''I was like, 'You've got to be kidding me.' It was like both of us in the trailer, like, 'You're dating a prince.' ''
Sarah added that the whole 'Suits' cast were like sisters on the show and said the fact they are going to the wedding makes it even more a ''family affair''.
She said: ''We called ourselves the sister wives ... We were with each other for longer than we went to college or high school with our friends.
''So we became family. We're still family, so this is a wonderful family affair.''