Is it normal to be attracted to girls sweaty armpits?

I saw a few pics of a girl I know she posted to facebook and her friends was with her they were dressed up and the part of her dress right under both her armpits was a little wet and it just turned me on so much I wished I could smell and lick her wet sweaty armpit so much. She's my friend from school but I really like her but she doesn't know so yeah.