Sofia Richie slips into her mother Diane Alexander’s ’96 burgundy velvet evening dress

Sofia Richie has been using her time in quarantine to rummage through her mother Diane Alexander’s closet full of pieces straight off the runway. 

After discovering a burgundy velvet evening dress, first worn by the 53-year-old fashion designer in 1996 and 2002, the model couldn’t help but take a few glam shots of herself in the timeless garment. 

‘Putting mom’s dress to work,’ the beauty, 22, captioned a slideshow of herself posing up a storm around dad Lionel Richie’s Beverly Hills mansion.

Beauty: Sofia Richie looked absolutely stunning in her mother Diane Alexander’s gown for a glamorous photo shoot

In Sofia’s first snap, she can be seen smoldering at the camera as she sat at the top of staircase in a pair of knee-high black leather boots.  

Her straight blonde hair hair cascaded past her shoulders, and in the next image, the star showed off her runway walk as she strutted down a hallway. 

The ex-girlfriend of Scott Disick also included a shot her parents, who were married from 1995 to 2004, which showed Alexander wearing the same dress 19 years ago. 

'Putting mom¿s dress to work,' the beauty, 22, captioned a slideshow of herself posing up a storm around dad Lionel Richie's Beverly Hills mansion; Diane Alexander seen with ex-husband Lionel Richie in 2002

‘Putting mom’s dress to work,’ the beauty, 22, captioned a slideshow of herself posing up a storm around dad Lionel Richie’s Beverly Hills mansion; Diane Alexander seen with ex-husband Lionel Richie in 2002

Posing away: After discovering a burgundy velvet evening dress, first worn by the 53-year-old fashion designer in 1996 and again in 2002, the model couldn't help but take a few glam shots of herself in the flowing garment

Posing away: After discovering a burgundy velvet evening dress, first worn by the 53-year-old fashion designer in 1996 and again in 2002, the model couldn’t help but take a few glam shots of herself in the flowing garment

The former couple looked happy in love as they attended a fundraising gala for Cedars-Sinai’s Community Outreach Assistance for Children’s Health Program. 

At the time, Sofia was just three-years-old, but she has since amassed a huge online following with more than 6.6 million Instagram followers.

Sofia’s past relationship with Disick recently became a topic of discussion after he discussed their relationship on Keeping Up With The Kardashians

Model: Her straight blonde hair hair cascaded past her shoulders, and in the next image, the star showed off her runway walk as she strutted down a hallway

Model: Her straight blonde hair hair cascaded past her shoulders, and in the next image, the star showed off her runway walk as she strutted down a hallway

During Thursday’s premiere of season 20 of the E! series, the 37-year-old reality star claimed that the reason for his split from Sofia last year, after almost three years of dating, was because she made him choose between her and the mother of his three kids.

Scott – who has Mason, 11, Penelope, eight, and Reign, six, with Kourtney Kardashian – told Khloe Kardashian and Kim Kardashian West: ‘I thought I would give it a try and make her more of a priority, but then even when doing that, she was like, ‘I don’t wanna share you as a boyfriend with Kourtney.’

Complicated: Sofia's post comes after ex-boyfriend Scott Disick discussed their relationship on Keeping Up With The Kardashians, revealing that Sofia gave him an ultimatum

Complicated: Sofia’s post comes after ex-boyfriend Scott Disick discussed their relationship on Keeping Up With The Kardashians, revealing that Sofia gave him an ultimatum

'Instead of just wanting to work with it, she literally said, with an ultimatum: "You have to choose, me or Kourtney."' Scott revealed

‘Instead of just wanting to work with it, she literally said, with an ultimatum: ‘You have to choose, me or Kourtney.” Scott revealed

‘Instead of just wanting to work with it, she literally said, with an ultimatum: ‘You have to choose, me or Kourtney.”

‘And I was like, but Kourtney is Kourtney and my kids. It’s a unit. I said, ‘How could you even want that for me?’ It just became an impossible relationship to keep carrying on with.’

Kim – who has recently filed for divorce from estranged husband Kanye West – replied: ‘Sometimes it’s time just to cut the cord. I get it. 

'I'm never going to give up my relationship with Kourtney and the co-parenting that we have. Nothing in a million years will be worth what we have.' Scott said

‘I’m never going to give up my relationship with Kourtney and the co-parenting that we have. Nothing in a million years will be worth what we have.’ Scott said

Scott insisted that no romantic partner would ever get between his co-parenting with Kourtney, 41.

He added: ‘I’m never going to give up my relationship with Kourtney and the co-parenting that we have. Nothing in a million years will be worth what we have.

‘And I truly believe if the right person were to come along in Kourtney’s life or my life, us having children and having this amazing relationship would only be a plus to the outsider.’

Since the season premiere was filmed, Scott has embarked on a romance with 19-year-old model Amelia Hamlin, who he went Instagram official with last month, while Kourtney is dating Blink-182 drummer Travis Barker.