Brandi Cyrus has announced her engagement to Matt Southcombe, marking a joyful close to what she called the biggest year of her life.On Dec. 26, Miley Cyrus's older sister shared the big news on her Instagram page, alongside a series of candid photos of the couple and a heartfelt message dedicated to her "dream man.""It's been the craziest, biggest year of my life and I get to close it out saying YES to forever with my dream man…" View this post on Instagram Instagram PostBrandi Cyrus also revealed through her post how she and her now-fiancé serendipitously met."I'm so thankful everyday that my flight got cancelled and I walked into this coffee shop one afternoon and found you. You're my very best friend and everything I've spent my whole life looking for. I love you forever!!!"How Matt Southcombe reacted to his engagement to Brandi CyrusThe carousel of photos shows Southcombe bent down on his knee, popping a ring before Brandi Cyrus, who appears delighted. She concluded the snippets with a photo of them kissing while their engagement rings could be seen glinting against the light.Southcombe reciprocated her post with a touching response."Not sure what I did to deserve such a good woman but I’m grateful for her everyday day! I love you!"In his own Instagram Stories, Southcombe made hearts flutter that he "locked down the dream girl," adding:"Never met a sweeter, harder working woman in my life."Congratulatory messages poured in for the soon-to-be husband and wife, such as the three red heart emojis from Tish, Brandi Cyrus's mother, as well as Noah's triple star-struck emojis.Image obtained from Instagram"Ahhhhh!!! Stop it. Congratulations Brandi!! I’ve been listening to YFT since day 1 and have always rooted for you to find your love. I’m so incredibly happy for you!!! And also can’t wait to hear all about it next week (hopefully!)," one wrote."I’ve been teary eyed over this all day because I’ve always said I cannot wait til Brandi gets her fairytale because you are so confident and boss lady alone that I know it’s gonna take a real amazing man to support someone one like you — it seems you don’t settle for less. Loveeee this so happy for you both congrats congrats congrats!!" another commented."Ohh My Gosh Brandi!!! Yessss!!! So so happy for you!! What awesome news!! Congrats and Hugs! Wishing you both the Best of Everything!!" someone penned.Global Premiere Of 20th Century Studios' "Avatar: Fire And Ash" - Source: GettyBrandi Cyrus's engagement comes weeks after her sister, Miley, got engaged to her beau, Maxx Morando.The confirmation came during the couple's attendance at the premiere of Avatar: Fire and Ash in Los Angeles, where they flaunted their sparkling engagement bands as they posed on the red carpet.The Flowers singer also confirmed the news in her interview with Good Morning America, revealing that the drummer went down on his knee and popped the question during their recent trip. Miley Cyrus shared:"I am not easy to surprise because I love to control every situation, and I had completely surrendered, and I'm telling you, I was so, so, so surprised."