Pippa Middleton Gives James Matthews' Brother Spencer One Last Warning: No Pranks and Watch the Booze!

Spencer Matthews, Pippa MiddletonPippa Middleton is not about to let her future brother-in-law mess up her wedding day!
A source tells E! News the soon-to-be bride has already delivered one final warning to James…
Related youtube video: (not from post) Source: eonline