Selena Gomez and six-year-old sister wearing matching outfits at 'Frozen 2' premiere

Selena Gomez, 27, was joined by her adorable little sister, Gracie Teefey, on the red carpet last night.

Little Gracie, six, smiled shyly at the cameras as she joined her elder sister in the spotlight. Gomez clasped Gracie’s hand and gave her a sweet hug and kiss as they walked the red carpet.

The pair wore identical outfits: long, floral maxi dresses with voluminous skirts and sleeves, paired with long, sequinned and feathered capes – a homage to the icy settings in the Frozen films. The outfits were designed by Marc Jacobs.

They also had matching jewellery designed by Pandora: they wore the jeweller’s Sparkle Heart earrings and Princess Wish rings.

Selena wore her dark hair in two loose plaits while Gracie’s was secured in a bun.

Gracie is Selena’s half-sister through her mother Mandy Teefey’s marriage to second husband Brian. She also has another half-sister, Victoria Gomez, through her father’s second marriage to Sara Gomez.

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Selena posted cute images of the pair’s appearance on Instagram, writing she hoped she’s now “the best big sissy ever”. The former Disney star, who boasts 160 million Instagram followers, also recently shared a picture of her sister’s Halloween costume.

“Sooo cute,” responded one fan, while another added, “Omg I’m literally dying!!! GRACIE!!!!! Sister goals”.

Others wrote: “This made my evening. You both look beautiful and so very sweet” and “Aren't the princesses adorable”.

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Other celebrities present at the premiere included actors Busy Philipps in a pretty floral dress; Kristen Bell in a burgundy key-hole style gown; and Evan Rachel Wood in a sleeveless Oscar de la Renta look which had a dramatic flared skirt.

Idina Menzel, who voices the ‘Frozen’ films’ Elsa character, wore a white sequinned floor-length gown by Galvan.