Burqa violates the Quran. Women's dress code is clearly enunciated in the Glorious Book (Surah NOOR and Surah AHZAB).
Burqa and Hijab, Niqab belong to ancient culture. They have nothing to do with divine ordinances.
Following the clergy instead of Allah is nothing but 'Shirk'.
The first regulation of the Dress Code for Muslim women is in 7:26, the second in 24:31 as we have seen and the third is in 33:59.
7:26 O Children of Adam! We have provided you with garments to cover your bodies as well as to adorn you. The best garment for you to wear, in addition, is good conduct. (Your character decorates you inside out.) These are the verses of God that they must take to heart.
24:31 And tell the believing women to lower their gaze, and guard their modesty. They should not show off their adornment beyond what may be decently and spontaneously apparent. Let them cover their chest with a light covering. …
33:59 O Prophet! Tell your wives, your daughters, and women of the believers that they should draw their outer garment around their body (when in public). This is easy and proper, so that they may be recognized and not be bothered. God is Absolver of imperfections, Merciful.
Here God sets the other regulation for the dress code for women during the Prophet's life. This verse does not only address the wives of the Prophet, but also wives of the believers, and therefore, to all believing women.