Hand Aiden and Sophia a big, shiny trophy – they've topped the list of popular baby names once again.

Nipping at Aiden's heels is Ethan, who surged up the boys' list four spots since last year to land at number 3. Jack broke into the top 10, joining Jackson, Jacob, and Jayden, and making J the most popular starting letter for boys' names.

Mia danced onto the girls' top 10 list this year, striking a pose at number 9. Abigail lost her grip on the number 10 position she held last year and slid down to number 14.

Click on each name for its popularity over time, common sibling names, and more.

Note: To capture true popularity, our exclusive baby names list combines names that sound the same but have multiple spellings (like Sophia or Sofia). Our data comes from nearly half a million parents who shared their baby's name with us in 2012.