Question: Which actress received the honorary title of "Mayor of Hollywood" in 1955 and was featured as part of a social media campaign for The Lifeline Program in 2011?
Sentence (from "I'm Still Hot"): As part of its social media campaign to build awareness about life settlements, The Lifeline Program released a second version of the song featuring comedian and actress Betty White on 22 September 2011.
Relevant evidence: Yes