After announcing news of their engagement, the soon-to-be-newlyweds jetted off to Las Vegas to celebrate Jason's 40th birthday and their impending nuptials.
While celebrating her man's 40th birthday on Thursday, Dec. 15, it was Brit who received the surprise of her life when Jason got down on one knee and proposed with a Neil Lane diamond ring—while her sons were present! The following morning, the singer tweeted, ""OMG. Last night Jason surprised me with the one gift I've been waiting for. Can't wait to show you! SO SO SO excited!!!! Xxo."
The "Hold It Against Me" crooner showed off her 3-plus carat Neil Lane sparkler (co-designed by Trawick) during the couple's Las Vegas rendezvous.
After two years of dating, the pop superstar and her devoted boyfriend Jason are tying the knot. It will be the third marriage for Britney. Congrats, lovebirds!
Let's take a look back at how the pretty pair's relationship evolved from purely professional to passionate proposal...
The duo—seen together here in 2009—met when Brit was still with her ex-husband, Kevin Federline. It was strickly platonic, as Jason served as her manager. But after her divorce, slowly but surely they're pairing turned romantic. He eventually quit his business relationship with her to focus on the personal—yeah!
In November 2009, Britney, Jason and her boys—from her marriage to K-Fed—Jayden James and Sean Preston, spent some down time in a hot tub Down Under.
The "Circus" singer and her main squeeze made headlines when they walked their first red carpet together at the 52nd Annual Grammy Awards in Los Angeles in January 2010.
It must be getting serious! Britney traveled to Santa Barbara in late July 2010 to spend some quality time with her beau's mom and dad.
In October 2010, the couple was spotted shopping for toys at Toys "R" Us for little Sean Preston and Jayden James. How cute!
Britney was all smiles in August 2010, as she and Jason indulged in some retail therapy while on vacation in Maui. Check out those bronzed tans!
During that Hawaiian vacay, Britney and Jason took some time out to wave to fans from their balcony—and Trawick revealed his rock-hard abs. Yowza!
Britney and Jason celebrated the pop princess' 29th birthday by escaping chilly Beverly Hills and heading south to Mexico in December 2010.
In June 2011, the pop star was hard at work on tour again—this time for her Femme Fatale album—but not without her BF by her side. Brit tweeted this photo of the two backstage, announcing, "It's Opening Night BITCH!!!!"
Britney's mom, Lynn, joined the couple and Brit's sons for Halloween in London this year.
Hot damn! The couple rarely show any PDA in real life, but when Jason costarred in Brit's sexy and controversial "Criminal" video as her savior from an abusive relationship, the two strip naked, roll around in the sheets together and share some passionate kisses. It's seriously steamy, y'all!
After the Femme Fatale singer wrapped her latest world tour, the group headed home on Dec. 11. Jason protectively held Jayden James and Sean Preston's hands as they made their way through LAX. Awww!
Last month, the loved-up pair were spotted out on a date night in London, taking in Rock of Ages at the Shaftesbury Theatre. But the real buzz about this trip occurred when Brit-Brit referred to Jason as her "husband" during a radio interview. Oops! Ask and you shall receive!
The famous fam departs from Hawaii after their summer vacation.
Spears andTrawick leave their hotel and head to The X Factor set in Miami
The cute couple get glam for the red carpet at the City of Hope gala on Oct. 10.
The twosome takes Brit's two sons to the California Music Academy.
Spears and Trawick have lunch and go shopping at L.A. Grove mall.
MORE PHOTOS: Fashion Spotlight: Britney Spears