American Idol Alumni Ace Young & Diana DeGarmo Get Engaged At Season 11 Finale

Access Hollywood
Ace Young proposes to Diana DeGarmo onstage during FOX's 'American Idol 2012' results show at Nokia Theatre L.A. Live on May 23, 2012 -- Getty Images

"American Idol" alumni Ace Young and Diana DeGarmo are engaged.

The couple got engaged on Wednesday night after Ace (from "Idol" Season 5) proposed to Diana (Season 3) on stage at the Season 11 finale.

PLAY IT NOW: Ace Young & Diana DeGarmo Talk Making Music On ‘The Young & The Restless’

"You're my best friend, I want to make this last forever and I will do anything in my power to have the most... amazing life together, if you will have me," Ace said as the "Idol" elimination suspense music played during his proposal.

"Diana Nicole DeGarmo. Will you. Marry. Me?" he added, as he got down on one knee.

VIEW THE PHOTOS: American Idol Season 11 Finale: Inside The Show

The crowd erupted in cheers as Diana said yes, and the couple kissed.

"Congratulations," Ryan Seacrest chimed in.

Responding to the news, a very happy Diana was almost at a loss for words.

VIEW THE PHOTOS: American Idol Season 11 Finale: The Red Carpet

"I'm so speechless right now. Wow babe, you picked a good one," she said, of her ring.

Copyright 2012 by NBC Universal, Inc. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

VIEW THE PHOTOS: Hollywood’s Smokin’ Hot Couples