Nicki Minaj packed her bags and headed up north for the final dates on the “I Am Still Music” tour. The rap diva looked mighty serious, dressed down in a black wig, cropped leather jacket, and tight gray pants, as she arrived in Canada with her entourage in tow, pushing carts of Louis Vuitton luggage. Lil Wayne and Nicki’s outing wraps tomorrow at Calgary’s Scotiabank Saddledome before she heads out on the road with Britney Spears in June.