Sigma Kappa
Most often done with two or more people, but you can do it yourself. Thumb and pointer finger make a heart, middle finger makes a triangle on top of the heart, and the other fingers are "dove wings."
I believe that my pc was the first to do it at my chapter, but now they do in group photos.
__________________
Sigma Kappa
And to each of you tonight, theres a candle burning bright, to guide you home on your darkest night