Dressed To Spell

Dressed To Spell is a special event held on the 20th of each month.

Rules
Each month, you can play the highest tier that you have unlocked just once. However, if you beat a tier and unlock the next tier, you are also allowed to play the newly unlocked tier.

Strategy
When you can afford to buy the clothing for the next tier, it's best to wait to buy the new clothing so you can play the event twice. After the event starts, play the old tier, then buy the new clothing and play the newly unlocked tier, too.