Idina Menzel rocks her engagement ring at the iHeartRadio Music Festival

Move over, Elsa. Idina Menzel has a little ice of her own.

The actress/singer/and soon to be wifey of Aaron Lohr attended the iHeartRadio Music Festival in Las Vegas on Saturday in a classic black ensemble with sexy cutouts. Of course, most were paying attention to the new accessory that Menzel was sporting on her left finger.

The star, who recently released her album, Idina., tweeted news of her engagement on Friday.

The couple starred together in the 2005 film adaptation of Rent, and you might remember Lohr from Newsies, and as one half of the "Bash Brothers" in The Might Ducks movies.

Menzel was previously married to actor Taye Diggs, with whom she has a 7-year-old son named Walker.

See more photos from the festival below.