Credit:; Splash News; Beverly News

Hats off to Louis Bardo!

Sandra Bullock's baby boy, who turns 2 this January, has become one of the most stylish tots in Hollywood. Since his secret adoption in 2010, little Louis has worn everything from knit beanies in New York City to a khaki fisherman's hat in London.

In addition to Louis' love of headwear, Bullock, 47, says her son is also a big fan of the opposite sex.

"He's a huge flirt!" Bullock told Jay Leno on The Tonight Show in December. "He's got a look where he just cuts the eyes at the ladies, and I'm like, 'I'm so sorry! I don't know what's happening.'"

To celebrate Louis Bardo Bullock's second birthday, check out Us Weekly's adorable slideshow now.