The link at
http://www.sunherald.com/2012/06/07/3995174/body-found-on-beach-in-bay-st.html says that the torso that washed up at Bay St. Louis is that of a white female between 15-22 years old (Mickey and missing NOLA woman Jaren Lockhart are both 22). It also says that the torso has "three piercings for jewelry, including two on her chest and one in her navel." I think if the torso was covered in tatoos (as Jaren's body is per WWLTV.com), LE would have said so, since they mentioned the piercings.
We know Mickey had a nose piercing and a piercing in her lip/chin area (at least that's what I see in pictures). So does Mickey have a pierced belly button and nipples (sorry if that word is offensive or too intimate...but what else can piercings in the chest mean...and I knew plenty of girls in undergrad who had this done)? I feel like that would give us our answer.