Advertisement is the key for promoting any product or service to the consumer. It greatly attracts consumer to purchase product from the marketer. The usage of celebrity in advertainment strongly influence the purchase behaviour of consumer in long run. The presence of celebrity in an advertisement stimulate consumer and possessing him to purchase the product or service. The objective of the present study is to assess the role of celebrity endorsement and advertisement effectiveness in influencing consumer purchase behaviour in the city of Bangaluru. The study adopted stratified random sampling method and collected around 240 samples after segregating the city into four zones. To assess the celebrity endorsement 12 determinant have been observed which were factorised into two dominant factors, while advertisement effectiveness has been measured with eight variables which were factorised into two dominant factors namely Glorious and Transparency Factor and Hallmark and Significance Factor. The consumer purchase behaviour have been measured using ten determinants and are factorised into two factors namely Engrossment and Apprising Factor and Willingness and Involvement Factor. The outcome of multiple regression and SEM shows that both celebrity endorsement and advertisement effectiveness have significant influence on Consumer Purchase Intention of Celebrity Endorsed Product. It is suggested that market need to focus more on faithfulness and integrity of the advertisement which in turn attract and uphold the existing customer in long run. To enhance the reaches of the advertisement among the consumers, marketer should focus on positivity of the product contents.