Sofia Vergara and Joe Manganiello engaged? Actress spotted wearing giant ring in Hawaii

Joe Manganiello may have celebrated his 38th birthday by putting a ring on Sofia Vergara.

The 42-year-old Modern Family actress was spotted with some very large bling on that finger while vacationing with the True Blood hunk and her family in Hawaii over the long holiday weekend.

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And this time, the giant rock doesn't look like anything from Sofia's Kay Jewelers line, with which she faked us out back in August -- just check out a glimpse of the alleged engagement bling.

On top of that, Vergara couldn't help but gush over her man for the millionth time, captioning an especially sweet Instagram pic: "Happy happy bday to my love and best friend to the one that makes me laugh like crazy!have a healthy wonderfull year babe!!! @joemanganiello."

The Columbian vixen also posted a pic of Manganiello's birthday cake, writing: "Hawaiian bday."

If engaged, Hollywood's hottest couple isn't wasting any time as they've only been officially dating since July. Prior to getting together, Vergara was engaged to Nick Loeb, the couple officially called it quits May 24. Meanwhile Manganiello was last in a relationship with Bridget Peters but he announced that had ended in March.

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Do you think it's too soon for these two to tie the knot?

Vergara recently revealed to Ellen DeGeneres that she first thought Manganiello was "too handsome" to date. See what changed her mind, below.