Ruling on praying in tight clothes
Question

What is the ruling on praying in tight clothes? Can one who wears them lead people in prayer?.
Praise be to Allah.It is makrooh for both men and women to wear tight clothes. What is prescribed is for the clothes to be moderate, not tight and showing the shape of the ‘awrah or very loose, but somewhere in between. 
Prayer offered in such clothes is valid, if they cover the body, but it is makrooh for the believing man or woman to wear such clothes. The clothes should be somewhere between too tight and too loose. This is what is appropriate."(Majmoo’ Fatawa al-Shaykh  Ibn Baz  29/217).