Cat frequently licks lips

I've noticed recently that Mellie seems to be licking her lips an awful lot -- much more than I've noticed in the past. In a human, I'd say someone who does this might have a dry mouth. Is a cat licking its lips frequently as sign of any medical condition I should have checked out? She isn't drinking any more water than usual. Thanks.....

Nakita does that when she is about to throw up. Recently she started licking her lips frequently and then threw up a hairball.

Not sure of any other condition but it makes sense when their stomachs aren't feeling well.

Licking lips can be a sign of nausea. Sounds like your kitty's got an upset tummy. If she's been doing this for a few days already, you should get it checked out by a vet, since stomach problems run the gamut from being easily treatable to very serious.

Her appetite is good, though, and she hasn't vomitted (or even tried to as far as I know), and her poo is normal. Do you think in that case she might still be nauseated?

Nausea is one, as said. Stress may be another - as seen in dogs, but probably in cats too.
But sometimes they seems to lick lips without being ill yes. My cats are also doing it, and both are healty and well.
Sometimes I believe they are saying something, loudlessly to us humans.

Licking lips can also be a sign of dental problems - their mouth tastes strange and feels sore, so they will lick their lips.

(as when we have a sore mouth, we salivate more)

Can you open her mouth and check the gumline at the front and the back? Check for inflamation, redness, calculus buildup around the gum line and check for a smell (not a cat food smell - it's a pungent odour)

I Hope you can find out what is bothering Mellie!

Thanks....I was wondering about stress, too. She's kind of a "high-strung" cat. Her teeth and gums are fine....I brush her teeth daily. But I'll try to check the inside of her mouth more closely for anything else.