In the early 90s when I was 3 or 4, I remember these little dolls that came in these plastic bubble like things. That's all I can really say.

Is this it?
Mattel's Liddle Kiddle Dolls?
http://www.associatedcontent.com/article/413109/mattels_liddle_kiddle_dolls_little.html

No, my older sister had Liddle Kiddles but they were made before my time.

I found the answer to my own question! Krystal Princesses. I found the commercial for them on Retrojunk.com