Ariel Winter -- I'm Finally Free!

Ariel Winter's long battle to be free from her mother is finally over -- she's been emancipated.

The 17-year-old "Modern Family" star has been estranged from her mother, Chrystal Workman since 2012 ... and was removed from the home after allegations of abuse.

Winter was overjoyed at the news, writing, "I am now officially emancipated!!! I'm really lucky I have an amazing support system and lovely people in my life who have given me the support and guidance to have been given this wonderful opportunity."

Winter also thanked her sister, Shanelle Gray ... with whom she's been living. Ariel remained close with her father throughout the ordeal ... and earlier this month posted a photo with him before heading off to her prom.