Once Paco Wong took over the management of Cookies, he made the decision to reduce the number of group members to four.
The successfully remaining members were announced on 27 April 2003, and the four members consisted of Stephy Tang, Kary Ng, Theresa Fu, and Miki Yeung (most often referred by the media as Mini Cookies); on the same day, the debut song of Mini Cookies, 「貪你可愛」, was released.
Elaine Ho, Gloria Chan, Helena Ma, and Serena Po had left the entertainment industry when the original nine-member group was downsized to four members in 2003.
On 28 March 2005, the members announced at the autograph session of their 4 in Love album that they had decided to explore solo careers.
In 2009, Miki Yeung and Theresa Fu had both decided not to renew with Gold Label Entertainment when their respective management contracts expired.
On 11 August 2010, Angela Au, Elaine Ho, Gloria Chan, and Helena Ma, from the nine-member Cookies, held a concert titled 曲奇Happy2gether音樂會 at Kowloonbay International Trade & Exhibition Centre.
Au, Ho, Chan, and Ma released a track titled 「拍擋」as the theme song of their mini concert.
Tang had expressed that she had just returned to Hong Kong the morning of that concert night while Au revealed on-stage that the surprise appearance by the three girls was originally the idea of Ng's mother.
She was referred to EMI Hong Kong by the model agency Talent Bang, which subsequently resulted in her joining of Cookies.
In 2013, Tang announced that she has signed with Sun Entertainment Culture Ltd, leading her to once again work with her previous manager when she was with Cookies, Paco Wong.
Like Fu and Tang, Yeung had previously been a part-time model before officially joining the entertainment industry.
She was referred to EMI Hong Kong by model agency, Starz People, which led to her joining Cookies.
Due to her singing performance during the competition, she was recognised and approached by EMI Hong Kong, which led to her subsequently joining Cookies.
Au expressed on Ho's behalf that all the Cookies members who are in Hong Kong at the time will also be attending.
She went on to study finance and accounting at Manchester Business School afterwards and eventually earned a master's degree.