The model was thrust into the public spotlight last year when it emerged that Sanders had cheated on her with Kristen Stewart, who appeared in his movie Snow White and the Huntsman.
Ross, who has remained largely quiet about the affair, filed for divorce from Sanders earlier this year.
She has now discussed how she felt about the fling, although again she did not explicitly mention the affair.
Speaking about her decision to appear in a fashion show for Alexander Wang just over a month after the fling emerged, she told The Edit: "Alex called and asked me to do it. It was a defining moment and I felt honoured to be supported by him during that difficult time."
Ross continued: "I was not in a good way at that point in my life and felt incredibly vulnerable. Doing the show was daunting, but it was wonderful to get up there, show my strength, and shine for someone who believes in me. I was very grateful."
Recent rumours have suggested that Sanders reached out to Stewart after Ross filed for divorce, though she has reportedly not returned his calls.
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