What could possibly be a more appropriate way to celebrate the 40th anniversary of Roberto Cavalli’s fashion empire than with the very best celebs? With a 10 foot tall birthday cake festooned with forty golden sparkling birthday candles, that’s what.

The event certainly wasn’t understated, but it was a worthy spectacle. 1,200 guests showed up for the party, held at the École Nationale Supérieure des Beaux-Arts in Paris. In attendance were Heidi Klum, Janet Jackson, Karolina Kurkova, Kylie Minogue, Leona Lewis, Natalia Vodianova, Bar Refaeli, Naomi Campbell, Taylor Swift, and Rachel Bilson. Naturally everyone looked incredible.

Leona Lewis particularly stood out; never before has orange actually looked good on a woman. Heidi Klum fixed her hair, thank goodness. The amfAR gala in Milan was an absolute combover nightmare for her. And both Taylor Swift and Rachel Bilson – who also attended Cavalli’s Milan shows last week – looked spectacular in dresses designed by the famous fashion house.