With idol girl groups, there is always a 'center' member.

The 'center' member receives the most spotlight and becomes the most known member of a group.

'Center' members are usually a member that can meet their audiences not only through their music but also through their good looks by appearing in commercials or in dramas.

Also, the actions of these 'center' members reflect the image of the whole group, so they are usually very cautious as to what they do and say for the sake of group.

Some agencies try to change their 'center' member to fit their album concepts, but end up not having a 'center' member at all so that all the popularity doesn't go to one person.

You can see these 'center' member changes from SISTAR Hyorin to Bora, Secret Sunhwa to Hyosung and KARA Hara to Kang Jiyoung.

Then there are some that have not changed such as After School Uee, Girls' Generation Yoona and miss A Suzy.

What are the similarities between these 'center' members?

A plastic surgery practice commented that they all have a "small face line."

They continued, "miss A Suzy has a soft and slim V-line face that balances out all the features of her face."

These 'center' members will continue to hold their spot by striving to show a positive image for their group.