Alli told TWIST that she thinks it's "really cool" her birthday is only a day after Gigi's, and that they even considered having a party together to celebrate! "The idea has definitely been talked about... We'll probably have our parties and do our own thing with our families," she told us EXCLUSIVELY before adding, "but we'll definitely have a birthday lunch together to catch up!"
Alli also explained the girls probably get along so well because they're both Tauruses and have personalities that are "very similar."
You know what else is similar? Their flawless taste in clothes and makeup! That's why in celebration of the stylish gals' big days, we've rounded up the prettiest pics they've ever taken together!
Click through the gallery of Alli and Gigi's cutest BFF selfies above, and leave your birthday messages for the girls in the comments!
Reporting credit: Michelle Haag