5 Shocking Facts About Carlos Sainz's Girlfriend, Rebecca Donaldson: The Scottish Entrepreneur Who Conquered The F1 Paddock
The high-octane world of Formula 1 is not just about speed and contracts; it's also about the partners who stand by the drivers, and as of December 24, 2025, no F1 power couple has generated more buzz than Carlos Sainz and his girlfriend, Rebecca Donaldson. Following a significant career move for the Spanish driver, who officially joined Williams Racing for the 2025 season, the spotlight on his personal life—specifically his relationship with the Scottish model and entrepreneur—has never been brighter.
The relationship between the 'Smooth Operator' and Donaldson has been one of the most talked-about stories in the paddock since mid-2023, largely due to the sudden nature of its beginning after Sainz's high-profile split from his long-time partner. This article dives deep into the identity of the woman who captured the heart of the F1 star, exploring her impressive career, their public life, and the context of Sainz's previous six-year romance.
Carlos Sainz Jr.: A Profile of The 'Smooth Operator'
Carlos Sainz Vázquez de Castro, known as Carlos Sainz Jr., is one of the most respected and popular drivers on the Formula 1 grid. His career trajectory has been marked by consistency, impressive race wins, and a recent, high-stakes move that has defined his future in the sport.
- Full Name: Carlos Sainz Vázquez de Castro
- Date of Birth: September 1, 1994
- Place of Birth: Madrid, Spain
- Nationality: Spanish
- F1 Debut: 2015 (with Toro Rosso)
- Former Teams: Toro Rosso, Renault, McLaren, Scuderia Ferrari
- Current Team (2025 Season): Williams Racing
- Notable Achievements: Multiple F1 race wins, including the 2024 Australian Grand Prix.
- Family: Son of rally legend Carlos Sainz Sr., a two-time World Rally Champion and three-time Dakar Rally winner.
The 2025 season marks a pivotal change for Sainz, who was forced to leave Ferrari to make way for seven-time World Champion Lewis Hamilton. His move to Williams Racing for the 2025 season and beyond is a fresh chapter, one that his partner, Rebecca Donaldson, is expected to support from the F1 paddock.
Rebecca Donaldson: The Scottish Model and Muse Activewear Founder
Carlos Sainz's current partner is far more than just an F1 WAG; Rebecca Donaldson is a successful Scottish model, entrepreneur, and business owner in her own right. Her entry into the F1 world has brought a new level of interest to her professional life and her relationship with the Spanish driver.
The Rise of a Scottish Entrepreneur
Rebecca Donaldson was born on July 24, 1995, in the historic town of Scone, located in the Scottish region of Perth and Kinross. She began her career in the demanding world of modeling, quickly building a strong portfolio and working with various high-profile brands. However, her ambition extended beyond the runway, leading her to transition into the business world.
In a move that highlights her entrepreneurial spirit, Donaldson founded her own company, Muse Activewear. Launched with a focus on high-quality, stylish, and functional fitness apparel, the brand quickly gained traction, establishing Donaldson as a savvy businesswoman. The success of Muse Activewear is a testament to her drive, proving she is a self-made success story independent of her F1 partner.
Relationship Timeline and Public Appearances
Sainz and Donaldson were first linked publicly in June 2023 when they were spotted together in Milan, sparking immediate dating rumors. The couple has maintained a relatively private relationship, choosing not to share extensive details of their romance on social media, a common trend among F1 drivers and their partners.
Despite their desire for privacy, Donaldson has become a familiar and supportive presence in the F1 paddock. Her public appearances at races have solidified her role as Sainz's main supporter. One of her most notable public outings came at the 2024 Australian Grand Prix, where she was seen celebrating Sainz's impressive victory. Her consistent presence, especially during key moments of the Williams driver’s career, demonstrates the strong foundation of their bond.
The Six-Year Chapter: Carlos Sainz and Isabel Hernáez
To fully understand the significance of Carlos Sainz's current relationship, it is essential to look back at the long-term partnership that preceded it. Before Rebecca Donaldson, Sainz was in a committed relationship with Spanish influencer and journalist, Isabel Hernáez.
A Private and Enduring Romance
Carlos Sainz and Isabel Hernáez were together for approximately six years, starting their relationship well before Sainz reached his peak fame at Ferrari. Throughout their time together, they were known for keeping their personal life extremely private, rarely speaking about each other in interviews or sharing intimate details on social media. Hernáez, an established figure in the fashion and communications industry, often accompanied Sainz to races but always maintained a low profile.
The Unexpected 2023 Split
The news of their breakup in early 2023 came as a major surprise to fans and the F1 community. After six years, the split was unexpected, and while both parties remained tight-lipped, the separation was widely reported. The timing of the breakup, followed shortly by the emergence of Sainz's new relationship with Rebecca Donaldson, fueled intense media speculation.
The end of the relationship with Hernáez marked a significant turning point in Sainz’s personal life. The immediate transition to a new, high-profile partner like Rebecca Donaldson, who is also an international model and entrepreneur, signaled a dramatic shift in the F1 driver's romantic chapter.
Topical Entities and LSI Keywords in Carlos Sainz's Love Life
The story of Carlos Sainz's relationships is deeply intertwined with the Formula 1 lifestyle, involving a network of high-profile individuals and businesses. The entities surrounding him—both personally and professionally—add significant topical authority to his narrative.
- F1 Paddock Dynamics: Rebecca Donaldson is part of the growing group of F1 WAGs, often seen interacting with other partners like the girlfriends of other F1 drivers. This is a crucial aspect of the social dynamics within the Formula 1 community.
- Williams Racing Future: Donaldson's support will be vital as Sainz navigates his new contract with Williams Racing, a move that requires significant focus and adaptation for the upcoming 2025 season.
- Entrepreneurial Focus: Her dedication to Muse Activewear, her activewear company, highlights a shared trait with Sainz: professional ambition. This common ground as driven, successful individuals likely strengthens their connection.
- Media Attention: The breakup with Isabel Hernáez, a Spanish influencer, and the subsequent relationship with Rebecca Donaldson, a Scottish model, kept both individuals firmly in the media spotlight, especially in Spanish and UK press.
In conclusion, Carlos Sainz’s current relationship with Rebecca Donaldson is one of the F1 paddock’s most talked-about stories. As Sainz embarks on his new journey with Williams Racing in 2025, Donaldson, the successful Scottish model and founder of Muse Activewear, stands by his side. Their bond represents a fresh, dynamic chapter for the Spanish driver, contrasting sharply with the private, long-term relationship that preceded it. The couple’s combined profile—one of a world-class athlete and the other of a rising global entrepreneur—ensures they will remain a prominent feature both on and off the Formula 1 grid for years to come.
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