Frosting for 90 Degree Weather

MARY QUESTIONDear Rose, I hope you can help me with my dilema. My daughter is getting married in August. The wedding reception will be outdoors in Illinois. She has picked cupcakes instead of a traditional wedding cake. The problem is the frosting....it is usually around 90 degrees and humid. Our baker usually uses some crisco (yikes!) in the frosting. I can not do crisco...no matter what the outside temp is...pls help with any suggestion on how to decorate the cupcakes, what ingredients to use and presentation. I am planning on ordering your book, "The Cake Bible." Thank you soooooo very much. ROSE REPLY the best frosting for 90 degree temperatures is the mousseline buttercream but i think the silk meringue might hold up well too. the easiest and safest would be to use a curd such as lemon curd.