Jessica Biel leaving the Fendi boutique in Paris (10/8)

E! says Justin Timberlake and Jessica Biel's wedding this weekend (oh, did I mention they're getting married this weekend in Italy) could cost upwards of $6.5 million, according to these figures they pulled completely out of their ass:

"If they've booked out a whole hotel--and chances are, they have--they're probably footing the bill for all of their guests," Bridal Bar founder Harmony Walton explains. "And if those guests are there for 5 to 7 days, that could be a million alone, depending on the hotel."

It's also common for stars to close down any properties adjacent to a wedding venue to shut out paparazzi; that's maybe another million, if the location is chic enough.

It's also common for stars to spend "as much on a rehearsal dinner as they do on a wedding," Walton notes. And we're probably not talking about just one dinner and then a wedding. After all, guests who travel for a destination wedding should be given stuff to do, right?

"Events leading up to a destination wedding tend to be experiential," Walton tells me. "Maybe they're renting vintage cars for 75 of their closest friends so they can do a car rally up the coast of Italy. If they're getting helicopter tours for their guests to take tours of the neighboring islands, that's going to cost."

Wow, I'm kinda shocked at the attention these two are getting. I was gonna trash this wedding something ugly, but now I'm rethinking it. Look, it's only Biel and girly-voice Timberlake -- I wouldn't exactly call it a royal union. If anything it should actually be a pretty safe wedding because the happy couple have been pretty boring lately. Maybe I'll dropship Lindsay Lohan and Amanda Bynes to the reception. I can't call this a Hollywood wedding unless there's hair and cocaine flying all over the place. Congrats!

*20 Jessica Biel pictures total in the gallery:

[FaemFlynet]