"We have a really cool relationship," Cody exclusively told Twist at his Welcome to Paradise: My Journey book signing earlier this week. "Before I go out, I'm like, 'Alli, can I wear this?'"
If they aren't in the same place, Cody admits he sometimes sends his sis pictures of his outfit before leaving the house. "Yeah, [I do] a lot of times. Not as much when I'm away, but when I'm home, every time I'll seriously ask her if I can wear this. I just really trust her opinion," the star explains. "She's built up such a following for [her fashion]."
It looks like Alli's advice has paid off, because the brother-sister duo always nails it on the red carpet. Don't believe us? Check out the above gallery featuring 10 pics of Alli and Cody striking a pose together.
Which picture is your favorite? Share in the comments!