And Campbell is looking forward to the nuptials, insisting Moss' bash will be a party to remember.
She tells Britain's Daily Mirror, "I am so proud of Kate. I love Jamie and I can't wait for the wedding. Jamie's such a nice guy, he's the one for her. It's going to be an amazing day and I'm on the phone with her all the time.
"It's going to be really nostalgic because we have grown up together and Kate getting married is an amazing moment. It shows we've all grown up but we are still the original supermodels.
"We'll still party, even though Kate's getting married. I don't think that will change us."