London Olympic organizers will look into whether Pippa Middleton and her family are breaking laws that prevent unofficial games merchandise from being sold.
Products featuring Olympic-style rings are being sold on the website of mail-order company Party Pieces, which is owned by the family of Prince William's wife, the former Kate Middleton.
Dozens of items are being sold under a "Celebrate The Games" section, including a ring toss game featuring five rings in the Olympic colors.
They could be breaching the London Olympic Games and Paralympic Games Act, which was passed in 2006.
London organizing committee spokeswoman Jackie Brock-Doyle says "we're going to have a look at it."
Companies can also be prosecuted if they use the slogans "backing the 2012 Games" or "supporting the London Games."