Gigi Hadid Should Get Back Together With Cody Simpson, Says Sister Alli Simpson

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Even though Cody Simpson and Gigi Hadid split in May, Cody's sister and father are still hoping the two can work things out.

ET caught up with Alli Simpson and her dad, Brad, when they appeared at the Children's Miracle Network Winter Wonderland Ball in Hollywood, where they were very hopeful that Gigi and Cody might reunite someday.

"I want to see it," Alli said of the possibility of the duo getting back together. "I'm waiting for it."

WATCH: It's Official! Gigi Hadid and Zayn Malik Step Out Holding Hands, Confirm They're Dating

"I text her kind of every day," Alli revealed. "She's always been like a big sister to me, and she helped me through my personal insecurities."

Gigi and Cody have remained friendly since the break-up earlier this year, when her rep said, "Cody and Gigi want each other to be in a place right now that allows him to only focus on his music, fans, and new message, while she can focus and continue building her career."

MORE: Gigi Hadid and Cody Simpson Are Proof That You Can Still Be Friendly With Your Exes

But if Cody's family is hoping for a reunion, they may be disappointed! Since the split, Gigi has had a fling with Joe Jonas, and most recently has been seen out with ex-One Directioner Zayn Malik.

After Gigi and the 22-year-old Brit musician were spotted holding hands together in late November, the 20-year-old model tweeted and then deleted a message on Monday, saying, "There's just no need to be judgmental about situations that are not your own. Let live."

"Sometimes life just happens," she added. "For whatever reason in whatever timing. And sometimes it doesn't make sense til it does. That's it."

MORE: Gigi Hadid Tweets -- Then Deletes -- About Zayn Malik, Her Ex Joe Jonas Unfollows Her

Gigi and Zayn first sparked dating rumors after he was spotted picking her up at Justin Bieber's American Music Awards afterparty at The Nice Guy on Nov. 22.

Watch the video below.

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