Hello Arsha,

As per NEET 2019 guidelines Salwars and trousers are suggested for women candidates. Wearing tight clothes and leggings and jeans might cause you some trouble at the exam centre. You should avoid clothes with embroidery, flowers, brooches and buttons. The clothes should be light and have half-sleeves. You are advised to avoid wearing jewellery like earrings, ring, pendants, nose ring, necklace or any kind of metallic item. 

For more details visit the following link:

https://medicine.careers360.com/articles/neet-dress-code/amp

I hope this helps.