its definitely a girl bro I wouldn't do yall like that ... the way its cropped tho I can see what you mean. But If you seen the whole picture tho you would know its just another flat booty gal .. they're out there lurkin about lol
When a girl changes her clothes in front of you, she's either really interested or you're level 99 friend-zoned. Or she hasn't spotted you in the tree yet.