Katherine Schwarzenegger! The author and podcast host is celebrating her 32nd birthday and has received loving messages from the most important people in her life.Katherine Schwarzenegger wishes her mom Maria Shriver a happy birthdayArnold Schwarzenegger seen getting cozy with mystery woman at the gymA post shared by chris pratt (@prattprattpratt)Her husband Chris Pratt shared a moving tribute on his Instagram account, talking about Katherine’s many strengths as a person, wife and mother, and