The artists will perform at the West Coast party, which will be hosted by Fergie of the Black Eyed Peas.
Previously announced performers include Jason Derulo, Fall Out Boy, Florida Georgia Line, Jennifer Hudson, Enrique Iglesias and Robin Thicke.
The five-hour bi-coastal event, headquartered in New York City’s Times Square, airs Dec. 31 on ABC. Jenny McCarthy, who joined “The View” earlier this year, will co-host with Seacrest from NYC.
Seacrest is executive producing the Dick Clark Productions presentation with Allen Shapiro, while Barry Adelman is co-executive producer. Larry Klein is producing.