To find out what they’re doing, and for lots more pics, go here!

Britney Spears takes Sean Preston to the Los Angeles Zoo for her birthday. Spears turned 25 years old yesterday. Spears has been partying every night for the last 10 days and today she spent some much needed time with her son Sean who is 14 months old. They took a golf cart throughout the zoo and received a special “VIP behind the scene” tour of the whole park. The whole time park security kept the 20 or so photographers that were there at bay…