There are more than a few benefits associated in being BFF with fashionista Victoria Beckham. Katie Holmes recently went on a fabulous girls-only getaway with Posh to take in Paris Fashion Week [0] and of course lots of shopping. And now we hear Posh is helping out with Katie's November 18th wedding [0] details. Apparently Posh is planning a secret trip to LA as well. Here's more [1]:

Holmes’s new best friend, Victoria “Posh Spice” Beckham, will be advising on Holmes’ every inch of fabric, reports the Daily Mirror.
“It’s fantastic news for Katie. Not only has a date been set for her big day, she’s got fashion queen Victoria helping with her wedding plans,” a source told the tab.
Beckham reportedly is flying to L.A. next week for a “secret meeting” to plan the bash, and the source says, “[Holmes] wants to have a stylish low-key hen do and if Victoria’s around, she’ll be there helping her celebrate.”
We CANNOT wait to see the details of this Italian wedding! Stay tuned...
Source [2]