The HST-TESS Advisory Committee chartered by the STScI Director invites input from the astronomical community on the use of HST for follow-up observations of TESS exoplanet discoveries, including HST preparatory and supporting observations for JWST follow-up of TESS-discovered planets. Further information on example topics, format, and white paper authorship can be found at https://outerspace.stsci.edu/display/HPR/Call+for+White+Papers.