She's well known to fans of the show for playing Katie Douglas for the last five seasons of the popular show that ran for twelve seasons. Here are some fun facts about her:

https://www.metv.com/lists/my-three-sons-star-tina-cole-shares-a-look-inside-her-career-fun-facts-and-whats-new-in-interview-with-metv

Fact #11: Tina maintained her hotness through Season 12.

Here's Katie when Fergus arrives from Scotland, S12 Ep. 1.
Absolutely gorgeous:
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Katie wears her hair in a very rare up-do for Fergus'
wedding, Ep. 4. Breathtakingly beautiful:
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Ep. 4 post-wedding, back to the pink outfit she wore in
Ep. 1. Such a cute expression on her pretty face:
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I'm hopeful for DVD releases all the way to the end, I so want to
watch these episodes in high-quality form.

Thx for the pics!

Yes, it would be great if Paramount unearthed the original 35mm network versions for the last two seasons, for the first time since their original airings.