Meghan Markle nails autumn chic in a monochrome jacket as she attends star-studded fundraiser in California

Meghan Markle was effortlessly chic in a monochrome statement coat as she attended a star-studded charity fundraiser in Santa Barbara last night.

The Duchess of Sussex, 42, and Prince Harry, 39, appeared at Kevin Costner‘One805 Live!’ event for first responders, held Friday at his $26 million polo field.

The loved-up couple was joined by Oprah Winfrey and Ellen DeGeneres, among others, while the parents of pop king Katy Perry were also present.

The fundraiser was held at Costner’s oceanfront estate in Summerland, California, and the “last chance” tables cost $12,000 each.

Meghan and Harry looked relaxed as they took another step into the heart of Hollywood, with the Duchess of Sussex opting for a monochrome, clean girl style.

The focus of her outfit was a statement cape-style jacket, with a high funnel neck and tie at the waist, in a black and white striped pattern.

She kept her hair sleek and added a touch of glamor to the ensemble with a pair of gold hoop earrings and a simple gold watch.

Meghan completed her look with custom black pants and kept her makeup to a minimum for the star-studded fundraiser.

Prince Harry also opted for a monochrome look, in a sleek black suit and shirt.

The couple was animated as they chatted with guests in Santa Barbara and stopped to take photos with Katy Perry’s parents.

They were introduced on stage as special guests before Meghan presented Costner with an honorary award.

Maroon 5 headlined the fall One805LIVE! Festival that took place again this year at Costner’s oceanfront estate in Summerland.

General admission tickets cost $350, while a table can cost up to $12,000 for what they call “last chance” tickets.

The Duchess of Sussex, 42, and Prince Harry, 39, appeared on Kevin Costner’s ‘One805 Live!’ event for first responders, held Friday at his $26 million polo field

The loved-up couple were joined by the likes of Oprah Winfrey and Ellen DeGeneres, while pop king Katy Perry’s parents were also in attendance

The fundraiser was held at Costner’s oceanfront estate in Summerland, California, and “last chance” tables cost $12,000 each

Meghan and Harry looked relaxed as they took another step into the heart of Hollywood, with the Duchess of Sussex opting for a monochrome, clean girl style

The focus of her outfit was a statement cape-style jacket, with a high funnel neck and tie at the waist, in a black and white striped pattern

She kept her hair pinned up and added a touch of glamor to the look with a pair of gold hoop earrings and a simple gold watch.

One805 described the event as taking place on the sprawling estate of “Kevin and Christine” Costner, despite their recent divorce and dispute over that home.

Baumgartner, 49, a fashion designer and the second wife of 68-year-old Costner, had cited “irreconcilable differences” in her divorce filing after 18 years of marriage on Monday, May 1.

In July, close friends of Baumgartner told DailyMail.com that the mother of three played a vital role in the close-knit community and was involved in the planning.

“Christine is a real person behind the scenes and has provided a huge amount of support for the upcoming fundraiser with Maroon 5 in September, which will be held on their property,” friends told DailyMail.com.

Meghan completed her look with custom black pants and kept her makeup to a minimum for the star-studded fundraiser