The "magazine within a magazine", titled Rebel, comes out this weekend in May's Company.
Rebel's content will cover articles on beauty, fashion and celebrities. There will also be competitions linking through to Coca-Cola's loyalty site Coke Zone.
CCGB said the aim was to echo the Duffy campaign by creating content that "empowered women in day-to-day life".
Two additional issues of Rebel are set to appear in the July and October issues of Company.
CCGB marketing director Cathryn Sleight said: "By enticing women to 'join the rebellion' Diet Coke and Company are engaging with the core consumer in her language and pushing her boundaries.
"At a time when everyone lives such hectic lives, the most rebellious thing you can do is take time out for yourself and go about your life as you wish."
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