pyjamas       
noun [ plural ] UK (US pajamas) uk/pɪˈdʒɑː.məz/ us/pɪˈdʒɑː.məz/
B2 mainly UK睡衣裤 
soft, loose clothing that is worn in bed and consists of trousers and a type of shirt
  I need a new pair of pyjamas. 我需要一套新的睡衣裤。 
 - More examples
 - blue and white striped pyjamas
 - flannelette/silk pyjamas