I tried sunless tanning once for my 8th grade graduation dance because I had a bad farmer's tan and I wanted to make my shoulders and upper chest tan... my dad helped me do it (my mom's handicapped so she doesn't have much hand control) and I was wrapped up in a towel. Well the neck of the dress dipped a little lower than the towel had so I had a line going across my chest and then it was white until the neck of the dress.
I hope I entertained you all with my sunless tanning disaster.