Final answer:
Madonna went through her cowgirl phase in 2005, incorporating western-style fashion into her wardrobe and performances.
Step-by-step explanation:
Madonna went through her cowgirl phase in 2005. In this phase, she adopted a western-style wardrobe, incorporating elements such as denim, cowboy boots, and cowboy hats into her fashion choices. One notable example of Madonna's cowgirl phase is her performance of the song 'Don't Tell Me' at the 2000 MTV Video Music Awards, in which she showcased her cowgirl-inspired outfit and dance moves.