The designer and singer, who left the E4 programme after its third series last year, said it was "difficult" to balance her career aspirations with making fans happy.
Speaking to DS at the launch of a pop-up shop for her online fashion brand ISWAI last night (August 28), Dunlop explained: "It's a difficult thing. Made in Chelsea just kind of happened.
"It's difficult because I know people know me from that and they would love to see me back and I'd love to give them that, but I think it would be one step forward, two steps back.
"You know, never close any doors, but I think I've got a bit more time to work out what's going to happen [in my career]."
Though she won't be on the show any time soon, Dunlop was reunited with Made in Chelsea co-stars Hugo Taylor and Spencer Matthews at the launch and will attend Millie Mackintosh's wedding to Professor Green next month.
"I am so excited. Everybody's getting married!" she said. "I thought I was about 11 years old. It's very overwhelming.
"I think it all starts happening suddenly, marriage, people getting pregnant. It's a long way off for me personally, but I'm very, very excited. I probably will be the last to get married."
Dunlop added that she was "upset" by the negative portrayal of her former love interest Spencer Matthews in the last series of Made in Chelsea.
"I got upset seeing him be ridiculed by people," she said. "I felt badly because I know who he really is and he's the kindest person.
"When I was in the show I was the baddie and he was the goodie, because he was just being so loving, and that kind of flip-reversed."
Dunlop's ISWAI pop-up shop in Kings Road, Chelsea will remain open until Saturday (August 31).
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