This is what Fabio Santoro, Deputy Secretary of the Lega Calcio said about Juve adding third star in 2008:
“A team may put however many stars on their jersey, there is no regulation defining the issue and the League does not impose this argument,”
“We say that it is an ethical issue. If Juventus wanted to put the third star when they win their next championship it would be their choice, and certainly would not be a violation of the rules.
“The only thing that should be remembered, however, is that with regard to the roll of honours officially recognised by the Lega Calcio the Bianconeri have won 27 and not 29.” (2008)