Selena Gomez and Her Younger Sister Were Twinning at 'Frozen 2' Premiere

Selena Gomez and Her Younger Sister Were Twinning at 'Frozen 2' Premiere.

Gomez and her 6-year-old sister, Gracie Teefey, stole the show at Thursday's red carpet event.

The siblings both wore Marc Jacobs outfits, including matching white dresses and gray capes.

Gomez shared photos of the night and her movie review on Instagram.

Hope I’m officially the best big sissy ever now..

She was LIVING her best life!!

Frozen 2 was amazing!!, Selena Gomez, via Instagram.

Gomez topped the 'Billboard' Hot 100 for the first time in her career with her new song, “Lose You to Love Me.".

The pop star is scheduled to perform new music at the 2019 American Music Awards later this month.

'Frozen 2' hits theaters Nov.

22