The two women were awarded for their activist work by the UN initiative which helps girls become leaders in the fight for gender equality.
On Thursday, Jamil posted a selfie which was taken at the ceremony featuring herself and Delevingne.
“We had a very public disagreement, and sorted out our differences rationally, and empathetically, as humans in person,” Jamil wrote.
“I like it when women work together. We are invariably stronger this way.”
Jamil also shared a photograph to her Instagram account featuring herself, Delevingne and actor Kate Hudson, alongside which she wrote: “It’s nice when girls get together to celebrate other girls.
“Being honoured at the #girlup awards was humbling and inspiring. Congrats to all the honorees Sunday including @katehudson@caradelevingne
Earlier this year, the former radio presenter and Delevingne were involved in a Twitter debate after Jamil described Lagerfeld as “ruthless” and a “misogynist” just days after his death.
Delevingne defended the fashion designer, asking Jamil to keep her opinions to herself and “stop bashing people for attention”.
“You are calling him ruthless??? Are you kidding me?” Delevigne, who was close to the designer and frequently models for Chanel, responded.
The reaction prompted a heated exchange in which Jamil referred to Lagerfeld as a “bad human” for his comments regarding weight and race.
“We can’t chalk decades of abusive rhetoric towards minorities as ‘being human’ or ‘making mistakes,’” Jamil wrote.
“Doing it once as a joke and then apologising is one thing, doing it again and again in spite of public outcry is a bad human. I’m sorry to speak ill of someone you love.”
In addition to perpetuating the idea that models should be thin, the designer once said: “If you don’t want your pants pulled about, don’t become a model! Join a nunnery,” regarding victims of sexual harassment.
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