Coca-Cola apologised for its banner ads that said "A 2 at 10 is a 10 at 2!" and "She’s seen more ceilings than Michelangelo".
In response, Sally Leach and Michelle Collins produced similar ads with slogans such as "If ceilings are all she sees, you need karma sutra" and "If she’s a 10 at 2… she’s not going home with you".
The duo, who formerly worked together at Ogilvy & Mather, added the 7Up bottles for fun as Sprite's rival.
Leach said: "Sprite made a campaign in bad taste. As women we want to bite back, have our say, and show our humour. There was so much backlash, we saw an opportunity to have a bit of fun with it. Here's our BrutallyRefreshing truth."