[PHOTOS] CHRISTINA AGUILERA CELEBRATES MAX LIRON'S BIRTHDAY AT LEGOLAND

Christina Aguilera takes her son Max to Legoland for a special birthday celebration on Thursday (January 12) in Carlsbad, Calif.

The 31-year-old entertainer’s son turned 4 that day! Happy birthday, Max!!! For a special birthday treat, Christina and Max enjoyed the attractions of the theme park, and the duo even drove a Legoland boat!

Christina, who is on the cover of Marie Claire magazine’s February issue, told the publication she is happy to see 2011 in the past.

“That was a rough year…Between my divorce and the other things I went through, a lot happened. It’s hard for anyone to go through that in public. But when you’re a celebrity and under a microscope, it’s 58 million times harder,” Christina said. “I grew an even thicker skin after that hard year.”