Looking at those, I'm pretty sure the built-in morphs can already do lips like hers - I'll make a stab at settings and see if you like them.  The first one is mostly makeup, the way her bottom lip is made to look.

Edit:  seems like the big distinctive feature about Ms. Barrymore's lips is the way the outer part of the top lip is very shallow.  Pretty sure I can duplicate that with the built in morphs, give me just a bit.

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