Kathy Sullivan dons her suit. NASA public domain image colelction.

(April 25, 1990) STS-31 Mission Specialist Kathryn D. Sullivan poses for a picture before donning her space suit and extravehicular mobility unit in the airlock of Discovery. Onboard the April 25, 1990 shuttle mission that deployed the Hubble Space Telescope, Sullivan remained ready to do a spacewalk in case there were problems putting the orbital observatory into space. The deployment went smoothly, and no spacewalk was necessary...Image # : s31-11-033