What is the ruling on praying in a "nurse's obligatory apron" during working hours?

It is permissible for a worshiper to pray in any pure garment that covers the 'awrah (private parts). It is recommended that the garment be beautiful and clean, based on the Almighty's saying: "O Children of Adam, take your adornment at every place of prayer," and the Prophet's (peace be upon him) saying: "When one of you prays, let him wear his two garments, for Allah is most deserving of being adorned for."