Carlos Sainz's girlfriend Rebecca Donaldson sets fashion statement with her latest Instagram post

Carlos Sainz's girlfriend, Rebecca Donaldson, recently made a post on her official social media account, showing off her outfit. Donaldson uploaded a series of photos on Instagram in which she donned a sleek outfit for a paid partnership.

Donaldson uploaded four photos in a collaboration with the Los Angeles-based clothing brand, Frame. In the post, she donned a black and white linear top along with white pants to set a fashion statement.

Uploading the post she wrote on Instagram:

"Le Sleek by @frame."

Here's the post by Rebecca Donaldson:

Miss Donaldson is a renowned model who has worked with renowned global brands such as Vogue Ukraine and Marie Claire Mexico. Additionally, she also appeared in multiple beauty and fashion editorials over the years.

Carlos Sainz and Rebecca Donaldson began dating in the summer of 2023 after the former Ferrari driver parted ways with Spanish journalist Isa Hernaez, whom he had dated for over six years. They were first spotted in Milan in June 2023, and then in August that year at a golf course in Amsterdam.

From then on, the couple has made multiple paddock appearances throughout the 2024 and 2025 seasons. Even though she often arrives at the paddock to support her boyfriend in racing, her major support for the F1 driver has come during Sainz's appendicitis surgery.

The Williams driver was sidelined due to surgery last year, and Donaldson reportedly supported him through his recovery in his home city, Madrid, the Spanish capital. Speaking about his relationship with Donaldson last year, Sainz joked that she would marry her in Las Vegas.

---

Carlos Sainz's girlfriend, Rebecca Donaldson credits her mother for modeling career

Rebecca Donaldson, the girlfriend of Williams driver Carlos Sainz, credits her mother for helping her enter the modeling arena. According to People.com, it was the Scottish national's mother who signed her up for a beauty pageant when she was 17 years old.

Carlos Sainz of Spain and Williams and Rebecca Donaldson arrive in the Paddock prior to final practice ahead of the F1 Grand Prix of Spain at Circuit de Barcelona-Catalunya on May 31, 2025 - Source: Getty

"My mom entered me and I was really surprised when I found out," Donaldson told the Daily Record in 2011. “We had to go to rehearsals to practise catwalk type dances before going in front of four judges."

Miss Donaldson won the Face of 2011 competition and went on to participate in the reality series Top Model UK. As she delivered the news of her win to her family, Donaldson said:

"My family were all very pleased for me, they were jumping around and stuff!”

Besides being a model, Rebecca Donaldson is also an entrepreneur. During the COVID-19 lockdown, she launched her clothing company, known as Muse Activewear, a collection of gym clothing she describes as comfortable and supportive.