The stars will be welcoming the start of 2013 in Gstaad, an exclusive mountain resort in Switzerland. Designer Valentino and his partner Giancarlo Giammetti have invited the pair to their lavish bash at the members-only Eagle Ski Club. According to the New York Post, Madonna and Anne may even team up to treat their fashion icon host to a tune when the clock strikes midnight.
'Rumours are flying that both Madonna and Anne Hathaway will take turns serenading the legendary designer, and they might even do a duet at midnight,' a source told the publication.
Anne - who has impressed critics with her performance in the new musical movie Les Misérables - will be accompanied by her husband Adam Shulman. Madonna is believed to be taking her teenage daughter Lourdes along.
The party promises to be an unforgettable experience.
Valentino is sparing no expense on the event and has reportedly splashed out 500,000 euros so far. Guests are flying in from all over the world to attend the bash. They will be treated to caviar, champagne, live music and a stunning firework display.