Article continues below advertisementKate Hudson is winding down summer in a swimsuit.The How to Lose a Guy in 10 Days star, 46, bared her cleavage in a brown bikini while strumming the guitar on Thursday, August 7.Article continues below advertisementSource: @katehudson/InstagramKate Hudson exposed her chest in a revealing bathing suit.Hudson exposed her chest in a scandalous top with white stitching. The star was all smiles as she held an instrument in the middle of a grass lawn.Last week, Hudson enjoyed a vacation to Colorado with friends and family.