The Shocking Truth About Alex And Sierra Now: Marriage, A 5SOS Baby, And A Solo Comeback

The question of "What happened to Alex and Sierra?" has lingered for years among fans of The X Factor, but the current reality for the beloved duo is a tale of two wildly different paths. As of late 2025, the couple who captured America's hearts with their unique, acoustic sound and undeniable chemistry are no longer a duo—or a couple. Since announcing their split in 2017, Alex Kinsey and Sierra Deaton have each embarked on entirely separate professional and personal journeys, with one half of the former pair experiencing a significant life change that made global headlines in 2024: a secret marriage and the quiet arrival of a baby with a major pop-rock star. This is the definitive, up-to-date breakdown of where Alex and Sierra are now.

The duo, who won the third and final season of the U.S. version of The X Factor in 2013, were a powerhouse of genuine talent and youthful romance. Their post-show career saw them release a successful debut album, It's About Us, but the pressures of the music industry and their relationship ultimately led to a professional and romantic parting of ways, a decision they kept private for over a year before their public announcement.

Alex Kinsey and Sierra Deaton: A Biographical Profile

The duo of Alex & Sierra consisted of two distinct singer-songwriters, each with their own history before and after their time on the reality competition.

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• Alex Kinsey
  • Full Name: Alex Kinsey
  • Born: September 8, 1991
  • Hometown: Daytona Beach, Florida, U.S.
  • Career Highlights: Winner of The X Factor U.S. Season 3 (with Sierra Deaton), released the single "Simple," and the EP Antisocial Person.
  • Current Status: Active solo singer-songwriter, releasing music under his own name and working on new projects in 2025.
• Sierra Deaton
  • Full Name: Sierra Phương-Thảo Deaton
  • Born: February 11, 1991
  • Hometown: Orlando, Florida, U.S.
  • Career Highlights: Winner of The X Factor U.S. Season 3 (with Alex Kinsey), launched a solo career under the stage name Essy, and is a signed songwriter.
  • Current Status: Married to Luke Hemmings (5 Seconds of Summer), mother to a baby girl (announced in 2024), and continues to pursue songwriting and solo music.

The Breakup and the End of Alex & Sierra

For fans who followed their journey from the initial audition to their victory under mentor Simon Cowell, the news of the split was a genuine shock. Alex and Sierra had been dating for seven years when they won the show and were together for a total of eight years before their eventual separation. They were often praised for their authentic, stripped-down performances, which stood in stark contrast to the highly produced pop acts of the time.

The couple officially announced their breakup in September 2017, though they revealed their romantic relationship had ended over a year prior. They released a joint statement on social media, explaining the difficulty of navigating a public relationship and the music industry simultaneously. "We've had an awfully magical time with each other and with you," they wrote, confirming that they would no longer be making music as a duo. The split was amicable, focusing on personal growth and the need to pursue individual creative paths.

While their debut album, It's About Us, was a commercial success, reaching number 19 on the Billboard 200 chart, the intense scrutiny and pressure that followed their reality TV win proved to be too much for the romantic and professional partnership to sustain. Their story serves as a poignant example of the challenges faced by couples who find fame together in the high-stakes world of competitive reality television.

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Sierra Deaton’s New Life: Marriage to a Pop-Rock Star and Motherhood

Of the two, Sierra Deaton has experienced the most high-profile life changes in recent years. After the split, Sierra began focusing on her solo career, adopting the stage name Essy. She signed with Unknown Music Publishing as a songwriter and released her debut solo single, "Don't Hurt," in 2018. She continues to work on new music, though her personal life has generated the biggest headlines.

Sierra started dating Luke Hemmings, the lead singer of the globally successful Australian pop-rock band 5 Seconds of Summer (5SOS), in 2018. Their relationship blossomed away from the intense spotlight that defined her previous one. The couple announced their engagement in 2021, and in a major, yet quiet, reveal, Hemmings confirmed in January 2024 that they had already gotten married, sparking a wave of excitement across both fandoms.

The biggest update came later in 2024 when Luke Hemmings and Sierra Deaton (now Hemmings) quietly announced the birth of their first child, a daughter. The surprise announcement of both the pregnancy and the birth was a joyous moment for the couple, marking a new chapter of marriage and parenthood for the former X Factor winner. Sierra’s current life is a world away from the acoustic duo days, now firmly entrenched in the international pop-rock scene as a wife and mother.

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Alex Kinsey’s Solo Journey and Creative Evolution

Alex Kinsey has also dedicated himself entirely to his solo artistry, moving past the shadow of the duo to establish his own sound and identity. He continues to perform and release music under his own name, often showcasing a more mature, introspective style that blends pop, folk, and acoustic elements.

His solo catalog includes the single "Simple" and the EP Party of One, which explored themes of independence and moving on. A significant release in his post-duo career is the 2022 EP, Antisocial Person, which further cemented his identity as a standalone artist. The EP features tracks that delve into personal vulnerabilities and the complexities of modern relationships, resonating with a new base of fans.

In addition to his studio releases, Alex is actively engaged with his audience through social media and his 'Buddy Sessions' series, where he collaborates with other musicians. As of 2025, his social media activity often hints at "new music currently in the works," suggesting an upcoming project that fans are eagerly anticipating. His continuous output, including songs like "Bread & Butter" (a collaboration with Ilana Armida), demonstrates a steady commitment to his craft, ensuring his continued relevance in the singer-songwriter space.

The Legacy and Future of the X Factor Winners

While the romantic and musical partnership of Alex and Sierra is a thing of the past, their legacy as the only duo to ever win the U.S. version of The X Factor remains intact. Their unique take on covers, like their viral rendition of Britney Spears' "Toxic," is still celebrated on fan pages and streaming platforms.

Today, the story of Alex and Sierra is a powerful narrative about personal and creative evolution. Sierra Deaton's life has transformed dramatically, finding love and starting a family with Luke Hemmings while continuing her work as Essy. Alex Kinsey, on the other hand, is building a dedicated solo career, proving that his talent extends far beyond the confines of a duo. Both artists are actively creating new work in 2025, ensuring that the former champions of The X Factor continue to make their mark on the music world, albeit on separate, successful paths.