Asalamualaikum wa rahmatullahi wa barakaatuh
Is there any special dress in your silsila or i can continue to wear as i usually wear (I am a boy) after bayah
wa ‘alaykum salam wa rahmatullahi wa barakatuh,
You may continue to wear normal clothes, but in the most distinguished Naqshbandi Silsilah it is recommended for men to wear loose clothing and to cover the head. If you wish to practice further, wearing a turban and jubbah are Sunnas our Shaykhs recommend to follow, at least while doing worship.