Kylie Jenner in Adidas track suit for movie night as she reveals why Tyga called her his 'fiancée'

Kylie Jenner loves to play dress up, as evidenced on her Instagram page and new website.

The 18-year-old reality star proved she's comfortable going casual as well during a movie date night with boyfriend Tyga in Calabasas, California on Wednesday.

Kylie donned a comfy Adidas track suit that covered her up from neck to ankles along with sporty trainers

She was definitely in a low-key mood, wearing her hair in a no-fuss style, half up and half down, and tinted shades partially concealed her eyes.

Tyga, 25, echoed that look in a camouflage hoodie, cargo shorts and athletic shoes.

The next day, Kylie reverted back to her glam girl image when she posted a selfie from her fashion-forward living room.