PICS: Lady Gaga and her fiancé once again leap into icy water for charity!

Los Angeles - Lady Gaga leapt into the icy waters of Lake Michigan in Chicago for charity on Sunday.

The Applause hitmaker slipped into skimpy leggings and a tummy-flashing cropped-top as she and her fiancé Taylor Kinney braved the chilly water, for the second year running, for the annual Polar Bear Plunge in support of the Special Olympics.

Taking to her Instagram account after the teeth-chattering event, the 29-year-old singer wrote: "We love the city of Chicago and the Polar Plunge for The Special Olympics. These men and women are brave and powerful. Me and Taylor love getting cold in your honor every year.(sic)"

We love the city of Chicago and the Polar Plunge for The Special Olympics. These men and women are brave and powerful. Me and Taylor love getting cold in your honor every year.

A photo posted by Lady Gaga (@ladygaga) on Mar 6, 2016 at 9:02am PST

And, despite being soaked through to their skin, the blonde beauty and her 34-year-old beau couldn't stop smiling.

Gaga later uploaded a photograph of her and Taylor emerging from the bitter water while flashing beaming smiles, alongside the caption: "We had such a good time! Though I can tell Taylor's shorts were freezing in this pic!(sic)."

The Polar Bear Plunge, which is held in support of the Special Olympic Games, raised an estimated $1.2m.

See the pics here:

(Photos: Getty Images)