This is not permissible. She must wear a lose outer garment, I.e. an abaya that covers her entire body including feet.

I was wondering if a woman pray salah with shorter dress and pants, all over the body is covered but it is home clothing, it is ok for her to pray?

Prayer, Women clothing | June 7, 2017 5:19 pm
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I was wondering if I need to wear abaya and hijab when I got to my roof top. May I not wear it , as long as it not it the view of non mahrams , And wear regular home clothes with a loosely worn hijab?