I like this one.

hey guys - i love all the suggestions but I am kind of worried some people wont get the chili part of it (when they wear the shirt on campus or other functions) something like

Shirts:
Front: It's getting hot in here!

Back: Delta Omega Delta Red, White, and Hot LaDees
(the name of our sorority)
getting more and more spicy
Bid Day Fall 2004

what you think??? i kind of like some of the other suggestions such as Blazin and the "We've spiced up our sisterhood"!
we could add chili peppers around it to look spicy but we all suck at art and design so ideas - most of you have experience with this kind of shirt and this will be our FIRST one!

Stick with the chili pepper on the shirt and at your organization's letters in the center of the pepper, then put the words advertising the cookoff arond the pepper. You could do this on the front or back of the shirt.