Could Kate Middleton and Prince William Sue Over Royal Wedding Condoms?

How can all these companies be allowed to put Kate and Prince William's faces on questionable items such as sick bags and condoms? Surely they didn't agree to that. Could they sue these...

Source: http://feeds.eonline.com/~r/eonline/answer/~3/iiEZ8v2hcYo/b237515_could_kate_middleton_prince_william_sue.html

Paulina Rubio Mena Suvari Rachel Blanchard Mary Elizabeth Winstead Chelsea Handler