Recently, Korean netizens discovered that Bora and Hyolyn's birthday on their profiles have slightly changed.

Hyolyn's birthday was originally known as January 11, 1991, but it also changed to December 11, 1990.
Netizens who found out the change are claiming that the two artists used false birthday information during their promotions for SISTAR.
As Bora and Hyolyn both left their former agency Starship Entertainment, netizens assume that they updated their profiles to their real birthdays.
They commented, "It's not a big deal. Only a month of difference" "Fans wished happy birthday to them on wrong days for the whole time".

(Credit= 'sistarsistar' Twitter, 'borabora_sugar' Instagram, Online Community)
(SBS Star)