- Older sister of singer/actress Phyllis McGuire and Dorothy McGuire.
- Member of The McGuire Sisters.
- She was the oldest of the three McGuire Sisters, a popular vocal trio in the 1950s.
- After the trio broke up in the late 1960s, she invested in real estate, restaurants, and other businesses. She lived in Las Vegas and Arizona for many years.
- With Christine's death, Phyllis is the lone surviving sister; Dorothy died in 2012.
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