Britney Spears’ sons, Sean Preston and Jayden James, turned 3 on Sunday and 2 on Friday, respectively, and Mama Britney threw them a good ol’ big-truck themed party! Britney and the boys partied it up family-style with Grandma Lynne, Grandpa Jamie, Auntie Jamie Lynn, and 2-month old cousin Maddie along with about 50 other guests. This should put to rest the speculation about the contents of Lynne’s soon-to-be-released book, which was falsely reported, a publishing insider told OK! Magazine, to contain a lot of stories about sex and drugs in Britney’s early teens, but it won’t. Celebrity friend tots also included on the guest list were Jenny McCarthy’s son Ewan and Gwen Stefani and Gavin Rossdale’s son, Kingston.  Kingston partied all weekend.  He was at Heidi Klum and Seal’s son, Henry’s, 3rd birthday party earlier with the Beckham boys.  Sounds like a brat pack in the making to me.

In typical spoiled, celebrity kid style, SP and JJ got Ed Hardy style tricked out trucks for their birthdays. A source told People that the trucks came complete with personalized license plates and Ed Hardy by Christian Audiger decals and air freshners.  Britney and family spent the day watching the boys and their little guests drive around the property of Brit pal, Adrienne Maloof-Nassif’s Beverly Park mansion. I didn’t get my first car until I was 18, and I still haven’t gotten a personalized license plate. I do have the Ed Hardy air freshener, though, so I’m not bitter.

The boys’ dad, Kevin Federline, threw them a pool party last weekend while their mother unceremoniously opened the MTV Video Music Awards, and surprisingly won three of them.

[Some details from People.com]

Photos from 9/13/08 credit: Fame