It's official: Blue Ivy is a princess!

Beyoncé, Jay Z, and the twins-to-be made a family appearance at the March 3 Hollywood premiere of Disney's live-action Beauty and the Beast. But it was little Blue Ivy who stole the show in a Gucci dress retailing for $2,100.

MORE: Blue Ivy Goes on Rare Public Outing With Beyoncé and Jay-Z — See the Adorable Photos!

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Beyoncé.com

The five-year-old looked like real-life royalty standing beside her parents. Queen Bey, 35, also stunned in a $26,000 Gucci dress that beautifully showcased her growing baby bump. Jay Z, 47, decided to keep his look casual with black pants and a denim jacket. Although the family-of-three skipped the red-carpet, Bey posted photos from the event on her website.

This isn't the first time Beyoncé has shared intimate moments on her personal page. The "Formation" singer famously posted photos of her belly after surprising fans with the news that she's pregnant with twins on Instagram.

MORE: 'Beauty and the Beast' Ban — Gay Character Ignites Boycotts Before Opening

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Beyoncé.com

Fans were quick to react to Blue's glamorous ensemble. One follower tweeted, "Photos of Blue Ivy in ruffle-y Gucci dresses are really all I need and want on my vision board, honestly."

Same!