The ornamental design for an equestrianundergarment, as shown and described.
FIG. 1 is a back view of an equestrian undergarment.
FIG. 2 is a front view of the equestrian undergarment.
FIG. 3 a right side view of the equestrian undergarment.
FIG. 4 is a left side of the equestrian undergarment.
FIG. 5 is a front view of the equestrian undergarment illustrating a seamless crotch with the leg portions in a folded position.
FIG. 6 is a bottom view of the equestrian undergarment with the legs in an open position.
FIG. 7 is an enlarged view of a portion of FIG. 6 delineated by a broken circle labeled “7” illustrating the seamless crotch; and,
FIG. 8 illustrates the equestrian undergarment in silhouette on a stylized torso to show length of leg portions and configuration of waist portion, as well as the ornamental details of FIGS. 1-7.
The drawings include stippling and shading to show contrast. Color forms no part of the claimed design. The dashed lines on the equestrian undergarment in FIGS. 1-7 represent stitching and form a part of the claimed design. The broken lines showing the torso and the legs in FIG. 8 represent environment that form no part of the claimed design. The dot-dash broken circles in FIGS. 6 and 7 show an area of enlargement and form no part of the claimed design.