5 Seconds of Summer star Luke Hemmings announced that he is engaged to girlfriend Sierra Deaton in an Instagram post on Tuesday, June 8. Learn more about Luke’s fiancee Sierra’s ethnicity and past relationships!

Love is in the air for 5 Seconds of Summer singer, Luke and fiancee Sierra.

On June 8, the lead vocalist from 5SOS’ announced his engagement by posting pictures from his proposal. Luke wrote in the captions, “With shaking hands but a full heart I proposed to my best friend earlier this year. I love you Thao and I can’t imagine my life without you.”

The caption suggests that Luke and Sierra have been engaged for some time now. However, the singer waited a few months to let his fans in on the news.

Luke’s fans could not be more thrilled to hear about their favourite singer’s engagement. Some were keen to know more about his fiancee Sierra.

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Who is Luke Hemmings’ fiancee Sierra Deaton?

Sierra is no stranger to fame!

The professional musician competed on the third and final season of X-Factor US back in 2013. Alex & Sierra were the popular duo on the show. This was back when Sierra was dating (now ex-boyfriend) Alex Kinsey.

Alex and Sierra dated for 8 years between 2009 to 2017. The singer began dating Luke only a year later.

Photo by Barry King/Getty Images

Following her break-up with ex Alex, she released music under her stage name Essy. She has also provided background vocals for 5 Seconds of Summer.

Prior to making a successful career in music, Sierra was a professional dance competitor for eleven years. During her time as a dancer, she earned three international titles for her Irish dancing skills. 

Earlier this month, Luke shared a sweet Pride Month post for his fiancee Sierra who is bisexual.

The now-deleted Instagram story read, “There is still so much work to be done but wanted to wish everyone a happy pride. Especially to my beautiful bisexual biracial angel.”

Sources close to the couple reveal that Luke popped the question in an intimate setting in Malibu, California.

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Sierra Deaton’s ethnicity revealed!

Sierra is part Asian (Vietnamese) and part British.

Her full name is Sierra Phuong-Thao Deaton. Raised in Orlando, Florida, the singer’s father Dr John Deaton, claims British descent, while her mother Vu Deaton, claims Vietnamese descent. She also has an older sister named Lara Deaton.

Fans react to Luke Hemmings getting engaged!

Reacting to Luke and Sierra’s engagement news one twitter user wrote, “I’m so so incredibly happy for @sierradeaton and @Luke5SOS ! Praying for nothing but an overflow of love and joy during this season and every single other one.”

Another user wrote, “Idk what to say, but I feel like we’re growin up together now seeing you and Sierra were engaged I feel a bit sad but happy for both of you. Luke you’re my first celebrity crush ever, like really you’re the first. Wish you guys always happy okay. I love both of you”

A third user said, “thinking about how much they both went through and then found each and love and now they get to spend their lives together! when i tell you I’m so truly happy for them both.”

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