The year has just started but AOA's Seolhyun, Girl's Day's Hyeri and Apink's Cho-rong and Na-eun are already busy signing CF deals and their 2016 calendars are already being filled.

Girl's Day's Hyeri shot up to fame with her hit series "Reply 1988." Naturally, the number of her endorsements is also rising. Her solo deals include Ghana chocolates and Albamon, reported AllKpop. She will start filming commercials after she wraps up with her series.

"Through her appearance on MBC's 'Real Men,' she dominated CFs with her aegyo, and now through 'Reply 1988' with her delightfully easy going image, she's 'winning victory after victory' in the advertising world," said a CF rep about Hyeri.

Meanwhile, AOA's Seolhyun is showing no signs of slowing down after being the most searched Kpop idol in 2015 and signing tons of CF deals. In addition to her successful group activities with AOA, Seolhyun was making waves for portraying a vampire on KBS' "Orange Marmalade." The series highlighted Seolhyun's perfect proportions, which became the talk of the town. She recently revealed her pictures for Hazzys Accessories, in which she looks hot in a little black dress. The fashion company is reportedly pleased with her understanding of the brand.

SK Telecom encountered problems when they used Seolhyun as their spokesmodel. Her cardboard cutout was stolen all across Korea. Some branches claimed they ran out of them because "people keep on kidnapping Seolhyun."

AOA had the most number of CFs in 2015. Competing companies are already splitting up the members. For fashion brand endorsements in Korea, Choa endorses NBA, Seolhyun does Buckaroo, and Chanmi, Jimin, Yuna, Hyejeong and Mina are with SPAO. All AOA members are modelling for SPAO in Hong Kong and other countries. For communications, Seolhyun is with SK Telecom while Choa, Chanmi, Jimin, Yuna, Hyejeong and Mina are with Line. The same goes for beauty products and other endorsements, but the girls are all together for Chicken Mania and some other brands.

Seolhyun is set to star in a thriller movie. She's had other movie and TV offers, including the film "With God," but FNC may turn down some of them to make way for AOA activities.

Lastly, Apink's Cho-rong and Na-eun are dancing and doing aegyo in their new CF for Duoback. The pair advertise the brand's affordable desk chairs and free Duowave chair speaker.