Sophia is the new #1 girl's name, knocking Isabella down to second place.

Meanwhile, Jacob continues its dominance in the boy's category.

The up-and-coming boy's name is Mason, jumping 10 places to #2... pretty obviously caused by Kourtney Kardashian naming her kid that.

The fastest rising name for girls: Briella, which jumped 394 spots, to No. 497. Briella Calafiore stars in "Jerseylicious," a reality TV show about battling stylists at a beauty salon in Green Brook, N.J. She's also in a spinoff called "Glam Fairy."

Brantley was the fastest rising name for boys, jumping 416 spots to No. 320. Brantley Gilbert is a singer who had a No. 1 country hit called "Country Must Be Country Wide."

Pop culture, baby.

... Elvis returned to the list at No. 904, after dropping off for a year. When Elvis dropped off the in 2010, it ended a run that had started in 1955.

Pop culture.

Here's the Social Security Administrations chart showing the changes from last year to this year. You can do a search there too. I checked my own name, which is just about to fall off the list, at 996. It was #493 in 2000, and it's dropped almost steadily since then. People in the "Ann" zone are going with Anna, which is #38. Ana, Anne, and Annie are all more popular than Ann.