Sofia Vergara and Joe Manganiello are engaged

It's official: the world of wedded bliss just got a whole lot hotter.

This summer love has gotten serious: Sofia Vergara and Joe Manganiello are set to wed! 

The sexy stars got engaged on Christmas Day while vacationing in Hawaii, two sources tell PEOPLE. 

Sofía Vergara is engaged to Joe Manganiello, E! News confirms. The good-looking pair, who became inseparable after they first started dating in July, have yet to publicly announce the news, although a source tells E! that the "True Blood" hottie popped the question on Christmas Day. 

Since coupling up, the super sexy duo has not only been making headlines for their attractive appearance (seriously, have you ever seen a hotter couple?!), but also for their whirlwind romance, as the two quickly became quite serious following the end of Vergara's engagement to former fiancé Nick Loeb. 

In December, the couple prompted engagement speculation when they were spotted out jewelry shopping in Los Angeles, where Manganeillo purchased a $640 rose ring for his gorgeous girlfriend, and, less than one month later, they were photographed looking blissfully in love while on vacation in Hawaii. 

During their romantic getaway, Vergara also posted an Instagram in which she wished her hunky man a happy birthday, calling the actor her "love and best friend" (aww!). 

"To the one that makes me laugh like crazy!" she captioned a sweet photo with her hubby-to-be, adding, "Have a healthy wonderful year babe!!! @JoeManganiello."

The 42-year-old "Modern Family" star was previously engaged to Loeb for nearly two years before the on-again-off-again pair called it quits (for good) in May 2014. Vergara, who accepted the Onion Crunch founder's proposal in July 2012, announced the split on her WhoSay page, citing work commitments and time apart as the reason for their breakup. 

Shortly after Vergara and Loeb split, the Colombian beauty began dating Manganiello, who had previously called the ABC actress his "celeb crush." 

"I had forgotten I had said that," Manganiello told Ryan Seacrest in August of his past admission to People magazine. "And when the magazine came out, by that time, we were seeing each other and when I got the magazine and opened it up and read it, I forgot I said that. I started laughing." 

As for Vergara's response? "She was laughing at me," he revealed. "She thought that I was crazy for having said that out loud or said it in the magazine, but you know, I guess it worked."