Alicia got covered in mud in the new Diary of a wimpy kid movie. The film looks like a PG rated version of Vacation, and slapstick it's everywhere. The trailers also features another minor wam scene with the family gettin some creamy stuff on them. But the mud scene is nice, and maybe she got involved in any other stuff.
Of course, no clip here because there are minors.

That Hollywood mud always looks watery. Actors must have objected to the real thing over the years - or crew, I don't know.

Hollywood mud is usually fake ... but then, Studio 588 mud is fake, too.