Sat., Dec. 31, 2011 2:17 PM PST
Is Kate Middleton pregnant? What was up with Beyoncé's shape-shifting baby bump? Does Courtney Stodden own a turtleneck?
Even we cannot answer every A-list puzzle of 2011. Some pieces of celebrity news simply defy all efforts at explanation.
So as part of our Best of 2011 extravaganza, we bring you the biggest, most mysterious unanswered questions of the year!
GET THE LIST: Top 10 Celebrity Mysteries of 2011
Kim Kardashian Reaches 20 Million Followers on Twitter
Chris Brown & Karreuche Tran Break Up
Watch: Ricky Gervais Is E!'s Hottie of the Week!
Basketball Diaries Director Scott Kalvert Dead of Apparent Suicide
Glee's Harry Shum Jr. Is Engaged!
Kourtney & Scott Not Planning to Elope