Tony Howell & Co. 10/9/15 Tony Howell & Co. 10/9/15

Carnegie Hall

Sierra and stage and screen star Julian Ovenden (Downton Abbey) joined the New York Pops for the one-night-only concert My Favorite Things: The Songs of Rodgers and Hammerstein. Check out TheaterMania's photos here.

Tony Howell & Co. 6/15/15 Tony Howell & Co. 6/15/15

NYT In Performance

Watch Sierra sing the number “A Little Bit Less Than” from It Shoulda Been You for The New York Times. Click here to watch now.

Tony Howell & Co. 6/12/15 Tony Howell & Co. 6/12/15

School of Rock

Sierra will join Andrew Lloyd Weber's School of Rock—The Musical! Click here to learn more.

Tony Howell & Co. 6/7/15 Tony Howell & Co. 6/7/15

TONY Red Carpet

Sierra was the red carpet host of the 2015 Tony Awards. Click here to see what she wore and how she did as a host!