After delivering her chair-spinning rendition of Britney Spears’s “Toxic” on season three of The Voice, Melanie Martinez has become one of the most successful pop acts to emerge from the show. Four years later, she's signed with Atlantic Records and made her dark pop debut with Crybaby last year, which spawned infectious hits like "Soap" and "Pity Party," and garnered her a cult following. Adam Levine would be so proud!

Today (April 28) marks the rising talent’s 21st birthday, so we think it’s a great time to get to know the pop newcomer a little better. We've gathered some trivia tidbits about the pint-sized starlet that some of you may not know. Case in point: Can you guess which Disney villainess inspired her unique hairdo?

Check out our gallery above to learn 21 lesser-known facts about The Voice alum!

Happy birthday, Melanie!