It's Amore for Tom and Katie

"Extra" is in Rome, bringing you all the latest TomKat wedding secrets.

With just hours to go until Tom Cruise and Katie Holmes say "I do," the festivities are already in full swing, including a top-secret VIP rehearsal dinner.

On the eve of Tom's last night as a bachelor, he and his famous friends stepped out, dressing to kill and ready for an Italian thrill!

We spotted many mega-star moments in the tiny Italian city, as J LO and Marc, Will and Jada and Brooke Shields stepped out on the town.

Also stepping out for the big event: Victoria and David Beckham, who kicked up a stir as they arrived at the airport and caused a fan frenzy outside their hotel.

But as the clock winds down to the celebration of the year, we caught Hollywood soaking up the sights of Rome.

We were at the airport as Will Smith landed. Meanwhile, Katie's new best friend, Brooke Shields, went sightseeing with her husband Chris Henchy, and Tom's mom and Katie's parents visited the Vatican.

Jenna Elfman, who attended TomKat's star-studded dinner Thursday night, dished details to "Extra," revealing "I'm just so happy for both of them!"

So who will do Katie's wedding hairstyle? Contrary to reports by some media outlets, celebrity hair guru Ken Paves is not doing the blushing bride's hair for the big day.

Instead, we've learned J Lo flew Paves to Rome to help her create all her smoldering looks for the TomKat festivities.

As Hollywood arrives in Rome for the wedding of the year, "Extra" is breaking Nicole Kidman news after learning exclusively that although she did not receive an invite to the nuptials, she did send a wedding gift.

People magazine reports the newlywed sent a gift with a note, wishing Tom and Katie "a lifetime of happiness together."

What's more, Tom's ex-girlfriend, Penélope Cruz, reportedly sent 120 red roses to TomKat!

"Extra" has confirmed the wedding will be a Scientology-based ceremony, and only we're showing you how the "I Do's" will go down as our cameras got exclusive access inside a Scientology wedding.

Not only will Tom and Katie profess their love, but also they will promise to never go to bed upset. In addition, Cruise will promise to spoil his beautiful bride with luxuries.