Teen Mom Amber Portwood formally charged and arrested for 'Teen Mom' assault 12/28/2010 Amber Portwood has been formally charged and arrested for attacking her two-year-old child's father Gary Shirley on national television. Read More RELATED NEWS 'Teen Mom OG' star Catelynn Lowell and husband Tyler Baltierra expecting again after miscarriage'Teen Mom OG' star Amber Portwood arrested for domestic batteryBristol Palin announces she's leaving 'Teen Mom OG' after one season: It wasn't a good fit and money doesn't impress me TAGS: Teen Mom Amber Portwood