@beyonce / Instagram 1 / 11
@beyonce / Instagram 1 / 11

Now that's a "cool" party!

Jay Z and Beyonce's little one got one sweet surprise on her 3rd birthday -- a "Frozen"-themed cake, according to her mama's Instagram.

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The "Drunk In Love" singer posted a heartwarming image of Blue Ivy Carter eating a multi-colored, 6-tier cake on her birthday while donning a frilly pink dress, adorned by little bows.

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"Frozen is definitely her favorite movie," a source close to the power couple told Us Weekly, added that Blue "always pretends to be Elsa."

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The "Frozen"-themed party also featured an ice sculpture in the shape of a snowflake that would have left Queen Elsa impressed. The message on the sculpture: "HAPPY BIRTHDAY BLUE."

The party for their little minion comes as Jay Z and Beyonce have cooled down lately -- literally! In addition to the "Frozen" party, they recently took an vacation to Iceland, where Beyonce posted multiple stunning photos on her Instagram.