Brie Larson sparked rumours of a possible engagement when she was spotted wearing a ring on her engagement finger while hosting Saturday Night Live over the weekend.

Brie Larson

Now, her representative has confirmed to a magazine that she and long-term boyfriend Alex Greenwald are set to tie the knot.

Insiders said that the 36-year-old musician popped the question to the Oscar-winning actress while holidaying in Tokyo in March.

And, according to the source, the 26-year-old actress is keen to start a family "right away".

The couple has been together for over two years, and Brie recently described the Phantom Planet singer as her "best friend". The actress shot into prominence for her role in Room.