Natasha Lyonne turns 33 on April 4, 2012. The actress is known for films such as &#39;American Pie,&#39; &#39;But I&#39;m a Cheerleader,&#39; and &#39;Slums of Beverly Hills.&#39;  <span class=meta>(LivePlanet&#47;Universal Pictures&#47;Zide-Perry Productions)</span>