James Corden's "Carpool Karaoke" has had serious star power in the past, with guests like Jennifer Lopez, Julia Roberts, George Clooney, and Adele riding in the passenger seat. However, on Wednesday's all new installment, the Late Late Show host might have driven with his most important guest yet: Michelle Obama.

The first lady joined the talk show host for a ride around the White House grounds, without her security detail. In fact, Obama revealed that this was only the second time in seven and a half years that she's "been in the passenger seat, listening to music, [and] rocking out."

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And they certainly did rock out. After kicking things off with the classic Stevie Wonder hit "Signed, Sealed, Delivered I'm Yours," FLOTUS really got to show off her surprisingly impressive vocal skills when Corden cranked up Beyonce's "Single Ladies."

From the vocal nuances to the dance moves, Obama, 52, nailed every second of the song, even blowing Corden out of the water for most of their karaoke duet.
"We were just fully in the Beyhive," Corden said after wrapping up the well-choreographed performance.

"We just dropped the mic into the hive," Obama added. "We were making honey in the Beyhive. We were making honey for our Lemonade!"

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Just when you thought watching the first lady sing and dance along to one of Beyonce's catchiest songs was going to be the most epic thing from this segment, Missy Elliott suddenly appeared out of nowhere in the back seat of the SUV and they all sang "This Is for My Girls."

The song was commissioned by Obama for her Let Girls Learn initiative and the White House's #62MillionGirls campaign, and the trio totally slayed the powerful anthem.

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However, Corden couldn't let a visit by the rap icon pass without getting them all to sing along with Elliott's 2001 megahit "Get Ur Freak On," which might have been one of "Carpool Karaoke"'s greatest highlights yet.

Check out more epic Carpool Karaoke moments in the video below.