The list of those who have held rallies in Philadelphia on behalf of Hillary Clinton is impressive. On Wednesday, it grew to include a fellow first lady.

Michelle Obama addressed students, educators and members of the community Wednesday at La Salle University's Tom Gola Arena, on the heels of Vice President Joe Biden, who spoke at Drexel Tuesday, actress Elizabeth Banks at the University of Pennsylvania Monday and Barack Obama earlier this month at the Art Museum.

Just days after Clinton and her Republican foe Donald Trump faced off in the first presidential debate, Obama didn't hold back against the businessman turned reality TV star turned hopeful commander in chief. She also reminded the crowd of the president's list of achievements.

"[We need] someone who is steady and measured, because when making life or death, war or peace decisions, a president just can’t pop off or lash out irrationally. No, we need an adult in the White House," FLOTUS said, seeming to cast doubt on Trump's temperament after he questioned Clinton's in Monday's debate.

And later in her speech: "Being president is not anything like reality TV. It is not an apprenticeship…It is about whether someone can handle the awesome responsibility of running this country."