She is best known for playing the loving mother in one of the most beloved films of all time, starring a very young and adorable Drew Barrymore.
But beyond that sweet, suburban mom persona, this actress also carved out an entirely different legacy - as a 'scream queen' in the 70s and 80s via her roles in iconic horror films such as The Hills Have Eyes, Cujo, and The Howling.
Her acting career also saw her land gigs in television series, including the lead in CBS sitcom Together We Stand and The New Lassie, as well as numerous guest roles in hit modern-day shows like Greys Anatomy and Criminal Minds.
Now in her 70s, the veteran actress on Monday was spotted out and about in Los Angeles looking fit and fabulous as she headed to the gym for her morning workout.
After an hour-long session, she was all smiles as she left the gym, before going on to meet her longtime beau later in the day.
Can you guess the celeb?
This Hollywood veteran, known for her roles in iconic horror films of the 70s and 80s, was snapped after a personal training session in Los Angeles on Monday.
The actress, now 76 and as radiant as ever, was later seen meeting up with her longtime partner, Lanny Tiefer.
It's Dee Wallace - the mom in E.T. the Eztra-Terrestrial.
The film star, who turns 77 in December, looked as radiant and as charming as ever despite decades in the spotlight, exclusive Daily Mail photos show.
Wallace appeared in great spirits post-workout, sporting gray tie-dye leggings, a long-sleeve tee, sneakers, and a blue cozy fleece for the temperamental fall weather.
The certified Scream Queener shot to fame after playing Mary Taylor, the single mother to little Elliott, Michael, and Gertie in Steven Spielberg's 1982 world-wide smash.
Later in the day, she was spotted with her longtime partner, Lanny Tiefer. The couple looked very animated and deep in conversation as they strolled outside in LA.
Wallace went on to make a name for herself as a horror movie star, appearing in many films including The Stepford Wives, The Hills Have Eyes, The Howling, and Cujo.
Beyond being an iconic 'Scream Queen' of the 70s and 80s, Dee Wallace is perhaps best known for playing Mary Taylor, the loving, single mother to Gertie (Drew Barrymore) and Elliot Taylor (Henry Thomas) in sci-fi hit E.T.
Wallace's role in the 1982 film made her a household name and a fixture in Hollywood history.
The star - who was born in Kansas City in 1948 - first developed an interest in acting after watching her mother who was a stage actress.
Her career began in the mid-70s when she took on small roles in television shows such as The Streets Of San Francisco, Ellery Queen, Police Woman and Hart To Hart.
In 1975, she starred in the movie The Stepford Wives - which also starred Katharine Ross, Paula Prentiss, Peter Masterson and Nanette Newman.
Two years later, Wallace took on a bigger role in the 1977 horror flick The Hills Have Eyes - which was written and directed by Wes Craven.
And in 1981, she continued to appear in movies in the genre, such as The Howling, which notably won the Saturn Award for Best Horror Film.
The following year, Dee catapulted to fame after taking on the role in E.T.
On Monday, she looked happy and healthy, casually dressed in leggings, a long-sleeve tee, sneakers, and a cozy blue fleece.
Wallace, who has been married three times, has been in a relationship with longtime partner Tiefer for 13 years.
Despite decades in the spotlight, the film star who turns 77 in December appears just as charming and lively as she did in her heyday.
In an interview with SYFY in 2022, Wallace reflected on starring in the movie and working alongside the star-studded cast and critically-acclaimed director.
'I don't remember it being chaotic at all,' she expressed. 'The kids were totally professional ... they weren't Hollywood kids. Most of them were just starting out.'
The three siblings were played by Henry Thomas, then 10; Robert MacNaughton, 14; and Barrymore, who was just seven.
'Robert, [who played] the eldest son, had had a lot more experience especially onstage and he was just amazing. Henry had had a couple of films by that time underneath his belt I think.'
Wallace added: 'And Drew was just “HI! I’M DREW AND I’M GONNA TAKE OVER THE PLACE!” So whenever they had breaks if they weren’t in school they were out playing shooting hoops or in Steven’s office playing with arcade games he had.'
'It was very much a family feeling on the whole set and I think that really transfers to the film.'
Throughout the course of her career thus far, Wallace has garnered 272 acting credits to her name per the star's official IMDB page.
Other horror flicks she starred in include Critters (1986), The Frighteners (1996), Halloween (2007), The House Of The Devil (2009) and also The Lords Of Salem (2012).
She has additionally taken on roles in recent television productions such as 9-1-1, The Bay and Fatal Attraction (2023).
She also made guest appearances in a number of shows including The Twilight Zone, The Office, Criminal Minds, Grey's Anatomy, My Name Is Earl, Supernatural and General Hospital.
For her performance as Patricia Spencer in General Hospital she was nominated for a Daytime Emmy Award for Outstanding Special Guest Performer in a Drama Series in 2016.