It seems there might be a mix-up or confusion here. “Trippier’s son” is usually associated with Kieran Trippier, a footballer who has played for teams like Tottenham Hotspur and Atlético Madrid, and “Cristiano Ronaldo’s son” refers to one of Cristiano Ronaldo’s children.

If both Trippier’s son and Cristiano Ronaldo’s son were spotted wearing Mbappé shirts, it could symbolize the popularity and admiration that young football fans have for Kylian Mbappé. Mbappé, being a star player for Paris Saint-Germain (PSG) and the French national team, has a massive following among young football enthusiasts who idolize him and may choose to wear his jersey in support or admiration. Seeing both Trippier’s and Ronaldo’s sons sporting Mbappé’s shirt could highlight the widespread appeal and influence of the French football sensation among young fans, transcending team loyalties or familial associations.