Katie Holmes and Tom Cruise's stylish daughter has a couture wardrobe waiting for her when she becomes a young lady - her fashionable mum has been collecting outfits for her ever since she was born.

Little Suri is already one of the world's most well-dressed girls and her mum has told InStyle magazine she's determined to make sure her five-year-old daughter dazzles when she hits her 20s.

"I will buy something with her in mind, thinking it's gonna look so great on her when she's 25 or whatever.

"I have a lot of things that I've already set aside, as well as some of my old maternity clothes so that she (can) wear them when she's having a daughter or son."

- AAP