Photographs shared online showed the bride dressed in a sleeveless halter neck gown with a plunging neckline and backless design.
Headey also wore a floral headpiece and veil in her hair, while Menchaca looked smart in a navy suit accessorized with a wide-brimmed beige hat.
The couple tied the knot surrounded by friends and family, including other actors Peter Dinklage, Emilia ClarkeMichelle Fairley and Sophie Turner and her husband Joe Jonas. The ceremony reportedly took place on Thursday (October 6).
Actors Headey and Menchaca began dating in 2020. Headey was previously married to musician Peter Loughran from 2007 to 201, with whom she shares 12-year-old son Wylie.
Headey also has a daughter named Teddy, seven, from a relationship with Dan Cadan.
Photographs from Headey and Menchaca’s wedding quickly went viral on social media, with fans praising the bride’s look.
“Bless you, Queen Cersei,” one person wrote, referring to Headey’s role as Cersei Lannister in Game of Thrones.
Another person joked: “I just hope he treats her right because she has a very passionate army behind her.”
A third person said: “I love so much that Lena is just the most expressive, happy person.”
In a 2019 interview, Headey said: Sunday Times to she believes that the rejection of sex with Harvey Weinstein may have negatively affected her career.
“After he was discovered as a ball of slime, on a larger scale than I just knew, I started to think, ‘F***, maybe because I didn’t fluff him, it’s affected a decade of my working life,'” said Headey.
She continued, “Because I was doing two jobs for Miramax [the film company founded by Weinstein] before these incidents, and after that there was nothing.”