Definition of yukata in English:
 yukata
nounPlural yukatas jʊˈkatayo͝oˈkädə
- A light cotton kimono. -  Example sentencesExamples -  The only problem is it's been ten years since Hiromi last wore her yukata and she doesn't know how to tie mine.
-  Aiko blushed heavily as she quickly donned a yukata.
-  My sister sent me a birthday present - a gorgeous silky yukata (summer kimono), and some funky kimono fabric cuts she bought at the Asakusa markets.
-  She then looked down to her body and found that she was wearing a white yukata.
-  Her yukata was large on her, but still clung to her curves where the obi tied around her waist.
-  Yuki's cheeks turned as pink as her winter yukata.
-  The kimonos and yukatas are for sale in heaps of colours and styles.
-  Guests are encouraged to sign up early for yukata and karaoke contests, as the number of contestants is limited.
-  The green satin obi was matched perfectly with the different colours of her yukata.
-  She wore a purple yukata that was tied at the waist with a thin black obi.
-  Megumi questioned as she watched Rei in a loose yukata leaving through the gate.
-  The ones I loved most were the glossy red yukata and the green Spanish dancing dress.
-  Dressed in her yukata, Rei stepped out and closed the door behind her.
-  The ninja reached down into the folds of my yukata and extracted the letter from an inside pocket.
-  Now back in my room in my cotton yukata and nothing else I steam, I generate indoor clouds, I am a walking demonstration of infra-red.
-  Gather lots of old ladies in yukata in a circle around aforementioned tower
-  I will be wearing a yukata.
-  His arms were folded in front of him inside the yukata.
 
Origin
  
Japanese, from yu 'hot water' (because originally worn indoors after a bath) + kata(bira) 'light kimono'.