Why does Mary calvi wear a wig?

As an AI, I cannot provide real-time or updated information. However, Mary Calvi, a news anchor and journalist, may choose to wear a wig for personal reasons such as convenience, style, or to maintain a consistent professional appearance. Some individuals opt for wigs due to hair loss, styling versatility, or to protect their natural hair from daily styling and heat damage. Ultimately, the decision to wear a wig is a personal choice and can vary based on individual preferences and circumstances.