McElhone, 51, has enjoyed a long and successful career in Hollywood since her early role in The Truman Show.
She has since starred in TV shows including Californiacation, Designated Survivor and a small but memorable role in The Crown.
In her personal life, McElhone has experienced some tragedy.
Her husband of 10 years, plastic surgeon Martin Kelly, died in 2008 suddenly at the age of 43 from a heart attack while she was pregnant with their baby.
Only a few months after his death, the actress welcomed the couple’s third son, Rex.
Speaking to The Telegraph UK in 2016, the actress revealed she wrote letters and diary entries to her late husband, and said her three young sons are yet to read them.
“They can if they want to but we talk about him a lot,” she said.