What advertising technique does Eva employ by hiring a famous singer to promote her fashion label?

The advertising technique that Eva employs by hiring a famous singer to promote her fashion label is endorsement. This strategy involves a well-known individual, such as a celebrity or public figure, supporting or recommending a product or brand, which can have a significant impact on consumer perceptions and purchasing decisions. When consumers see a trusted or admired figure associated with a brand, they may be more inclined to consider the product as desirable or high-quality, thereby enhancing the brand's credibility.

Endorsements work on the principle of celebrity influence, where endorsers use their fame and relatability to attract attention and create a positive association with the product. This method garners attention and can effectively reach broader audiences by leveraging the star power of the individual involved.