Credit: Denise Truscello/WireImage

All hail the queen!

Alyssa Campanella, a.k.a. Miss California, was crowned Miss USA during Sunday's pageant at the Planet Hollywood Casino in Las Vegas, broadcast live on NBC.

The 21-year-old "history geek" was born and raised in New Jersey; she bested 50 other contenders, including Miss Tennessee Ashley Durham (second place), Miss Alabama Madeline Mitchell (third), and Miss Texas Ana Christina Rodriguez (fourth).

The judges who selected Campanella included Real Housewives of New Jersey's Caroline Manzo, rapper Lil Jon, Dallas Mavericks player Tyson Chandler, celeb chef Rocco DiSpirito and actress Mariel Hemingway.

How'd the brunette bombshell stand out? She didn't break a sweat or struggle when asked a controversial question about whether marijuana should be legalized. (Campanella's stance: Medical marijuana should be legal, but all other forms of the drug should remain forbidden.)

Campanella will represent the USA at the Miss Universe pageant, to be held Sept. 12 in Sao Paolo, Brazil.

Tell Us: Did the right beauty queen win?