To update a shag, use choppy layers and finger styling to achieve an effortless messy textured look. But if you don’t want a look that is overly undone, create a smooth super full crown and limit the pieciness around the face.
Kick up the wedge, if you have fairly thick, wavy hair use interior layers with a heavy graduation in the back. Use soft fringe to fall over the forehead, when blowing dry flip the ends out.
Short layered look, start with a layer crop, keeping it longer in the front with an angle over one eye. In the crown shorten the layers for fullness, and use a strong gel for holding.