The Design consists of the features of shape and configuration of the vanity shown in the drawings. The drawings show four variants of the design, which do not differ substantially from each other, that is the first variant of Figures 1-6, the second variant of Figures 7-11, the third variant of Figures 12-16 and the fourth variant of Figures 17-21. The broken line representations in the Figures are for the purpose of illustration only, and form no part of the design.Figure 1 is a left, top, front perspective view of the vanity according to a first variant of the design;Figure 2 is a front elevational view of the vanity of Figure 1;Figure 3 is a right side elevational view of the vanity of Figure 1; the left side elevational view thereof being a mirror image of the right side shown;Figure 4 is a top plan view of the vanity of Figure 1;Figure 5 is a rear elevational view of the vanity of Figure 1;Figure 6 is a bottom plan view of the vanity of Figure 1;Figure 7 is a right, top, front perspective view of the vanity according to a second variant of the design, the right side elevational view thereof being identical to Figure 3 and the left side elevational view thereof being a mirror image of Figure 3;Figure 8 is a front elevational view of the vanity of Figure 7;Figure 9 is a top plan view of the vanity of Figure 7;Figure 10 is a rear elevational view of the vanity of Figure 7;Figure 11 is a bottom plan view of the vanity of Figure 7;Figure 12 is a right, top perspective view of the vanity according to a third variant of the design, the right side elevational view thereof being identical to Figure 3 and the left side elevational view thereof being a mirror image of Figure 3;Figure 13 is a front elevational view of the vanity of Figure 12;Figure 14 is a top plan view of the vanity of Figure 12;Figure 15 is a rear elevational view of the vanity of Figure 12;Figure 16 is a bottom plan view of the vanity of Figure 12;Figure 17 is a right, top, front perspective view of the vanity according to a fourth variant of the design, the right side elevational view thereof being identical to Figure 3 and the left side elevational view thereof being a mirror image of Figure 3;Figure 18 is a front elevational view of the vanity of Figure 17;Figure 19 is a top plan view of the vanity of Figure 17;Figure 20 is a rear elevational view of the vanity of Figure 17; andFigure 21 is a bottom plan view of the vanity of Figure 17.