Kate Hudson Oops ... I Missed A Spot

7/14/2016 12:50 PM PDT

Kate Hudson's arms avoided getting burned thanks to nature's sunblock, but her ass wasn't as fortunate.

Kate's vacationing in Ibiza but took a boat Thursday to the neighboring island of Formentera. The place is known for its muddy beaches and she applied liberally.

Gotta hate those hard to reach places that fall through the cracks.