Jessica Simpson's Silliest Twitpics

The mom-to-be embraces her not-so-serious side on Twitter

RIVAL SCHOOLS

Her lips may be slightly sealed in this coy pose with fiancé Johnson, but Simpson had her potty mouth ready to go during their visit to his Ivy League alma mater for his 10-year reunion. "Stomping on haaaarvard ground with a Yalie. Huck Farvard!"