We’ve uncovered T-Mobile’s MySpace plans for its Sidekick devices. The Sidekick MySpace application will allow users to edit their profiles, upload pictures from their device, read/send messages, post comments, and much more. The program, which will be available from the Sidekick catalog, will keep you logged in constantly, notifying you immediately of any new comments, friend requests, and messages. You can also customize the alerts and notifications. The screenshots look pretty dope, with a clean interface that gives you immediate access to the most important information. The app also indicates how many of your friends are online at any given time, a feature that’s exclusive to the Sidekick interface. Current Sidekick 3 and iD owners will be able to install this sometime in the near future. It will come as standard fare on the upcoming Sidekick Zante. No word yet on exactly when it’s dropping, but given the polished nature of T-Mobile’s support documentation, we have a hunch it might be sooner  than you’d think.

Customization was crucial for over 1,000 partygoers who  gathered to celebrate the launch of the new T-Mobile Sidekick ID, the latest Sidekick that puts the emphasis on individuality. Celebrities and socialites could change the mood of the party as easily as they could change the colors and styles on the latest addition to the Sidekick family.

Mary-Kate and Ashley Olsen slipped in the side door alongside MTV’s Ryan Cabrera, Nicole Ritchie and Nicky Hilton.  Those feeling playful had their choice of having a blast with high-tech video games or taking it easy with low-tech board games. Ian Ziering and Shane West took on all challengers in air hockey, looking for someone they could beat.

Along with customizing their party experience, guests had the chance to customize their personal styles through make-your-own tshirt and jewelry stations. Or they could get a henna tattoo and further alterations from the staff of makeup artists and stylists on hand from Too Faced Cosmetics and Floyd’s Barber Shop. Once transformed many joined the Cheetah Girls in the photo shoot area to pose for mock magazine covers.   Dancers had the pleasure of finding DJ Steve Aoki and The MisShapes spinning at the turntables. Later, Fall Out Boy took the stage and rocked the house while fans fought to the front of the stage.

Find out more about the $99 T-Mobile Sidekick iD at Sidekick.com