Hilary Duff reveals how she really felt about filming Gossip Girl sex scene with two partners

Hilary Duff has revealed the one scene that she'll never forget filming during her one-season arc on Gossip Girl and a lot of fans would agree with her pick.

During an episode of Harper's Bazaar's Burning Questions, the 38-year-old actress was asked, 'What was the most memorable part of playing Olivia Burke on Gossip Girl?'

'Probably the threesome was the most standout moment,' Duff answered with a smile.

Duff - who is mourning the loss of former Lizzie McGuire co-star Robert Carradine - joined the teen drama in 2009, playing a famous movie star who enrolled at NYU to try to have a normal life.

Olivia made her mark the minute she arrived on the social scene of Manhattan's Upper East Side among the overprivileged former prep school students.

Duff's character became the roommate of Jessica Szohr's Vanessa Abrams and soon became involved with Penn Badgley's Dan Humphrey.

Eventually, one thing led to another and Olivia initiated a threesome with Dan and Vanessa.

'I remember being like, 'Oh, my mom's going to call me after this one,' Duff recalled, laughing.

'I was in Paris not too long ago and my bag got lost. I went up to the lady who worked at the airline and she's like, 'Are you on Gossip Girl?''Duff continued.

''Yes. Love that's how you know me,''was Duff's response to the attendant.

The Gossip Girl stint was quite a change from the roles Duff had played before.

Her first starring role was as the young witch Wendy in Caspar and Wendy (1998)

By the time she landed Gossip Girl, Duff was best known as the relatable teen in the Disney Channel series Lizzie McGuire who experiences the ups and downs of middle school.

Duff's interview with Harper's Bazaar follows her confirmation that her new song We Don't Talk is about her rift with sister Haylie, with whom she hasn't been seen or photographed since 2019.

'It's definitely about my sister. And just absolutely the most lonely part of my existence is not having my sister in my life at the moment,' Duff said in a recent interview with CBS News special correspondent Anthony Mason for CBS Mornings.

The song is among the tracks on Duff's new album luck… or something, which was released on February 20.

'I really struggled with thinking about including that on the record. But it's funny as a person that exists in the world without my other half, so many people are having that experience,' and ultimately included the song on the record 'because it's my reality.'

The new album is Duff's first music in a decade and was produced with her husband Matthew Koma. They share daughters Banks Violet, seven, Mae James, four, and Townes Meadow Bair, one. She also has son Luca, 13, with ex-husband Mike Comrie.