ABBA are among a list of acts tipped to perform at Prince William and Kate Middleton's wedding in 2011.Bookmaker Ladbrokes have offered odds of 66-1 for the Swedish group to reform at the royal wedding on April 29.Spokesman Alex Donohoe told the Daily Star: "The return of ABBA would be sensational news for fans, unfortunately for us it would cost us a lot of money, money, money."Other acts slated for a possible performance include Sir Paul McCartney and Sir Elton John.
