Justin Timberlake and Jessica Biel wedding celebration kicks off with beach party

Justin Timberlake and fiance Jessica Biel reportedly got the festivities started for their Italian wedding with a little prenuptial dinner party on the beach on Wednesday (Oct. 17), according to Us Weekly.

The couple hosted more than 50 guests, including Timberlake's "D*** in a Box" costar Andy Samberg, music manager Johnny Wright and Biel's "Seventh Heaven" costar Beverley Mitchell, for a casual affair at Cala Masciola beach in Puglia, Italy. The partygoers enjoyed cocktails, dinner and music like Marvin Gaye's "Let's Get It On."

Later in the evening, the revelers were treated to a fireworks display before heading back to the resort where the wedding ceremony is to take place this week.

"They are ready to get married!" a source tells Us Weekly.