no jailbreak
By request, here is the hack for Dream Dresses by Breaktime Studios. The same hack also works for all other Breaktime Studios games: Pocket Potions, Sweet Shop, Dragon Skies, etc..
*Working as of 1 December 2013* *Warning* I woke up this morning to find that I couldn't connect to Campus Holiday (but somehow I've been unbanned from Campus Life) ....
***UPDATE 15 MARCH 2014: As of the last update, the Free Mermaid Spins hack no longer works! Some people have reported that this hack works, so go try it! :)***.