I never thought about it, but there's some resemblance. One thing that makes it a little difficult to compare looks is that they've rarely had similar hairstyles.
As Erin entered her very-late teens and early twenties, she was going off the charts in sexiness, in my opinion. Marie was always attractive but I think Erin had a "smokin'-hot" factor at times...!
In memory of lovely Erin Moran 1960-2017 ~ Missing you
"For you are beautiful ~ And I have loved you dearly ~ More dearly than the spoken word can tell..."
"What's the word?" (Paul Martin) ~~ "I don't want money for nothing." (Timmy Martin) -- Lassie ROCKS! WORD UP
"It's just a dugout that my dad built... In case the reds decide to push the button down..."