The Spice Girl-turned-fashion designer - whose VB collection has been worn by the likes of Madonna, Jennifer Lopez and Oprah Winfrey - wants to give the royal bride-to-be a new wardrobe of stylish clothes to wear on her honeymoon with Prince William.
A source told the Daily Star newspaper: "Victoria is set to give Kate the best gift a girl would want, a boxful of cutting edge dresses.
"Victoria is a real girls' girl and she thinks Kate is lovely. She admires Kate's natural sense of style and would be proud to gift her several of her hand-designed dresses for her honeymoon."
Victoria and her husband David are said to be "looking forward" to attending the wedding of Kate and William at Westminster Abbey on April 29.
The British prince and the 35-year-old soccer star are believed to have become close since they worked together on England's failed World Cup bid last year.
The source added: "They've known the prince for years and David has recently become good friends with him."
The royal couple reportedly sent the Beckhams a bouquet to congratulate them when they announced they were expecting their fourth child together.