These Juicy Couture Iconic Pop-Top Mittens ($55 at Juicy Couture) are too cute because you can fold over tops of these and they become utilitarian fingerless gloves.
Here are more fingerless glove picks:
Bop Basics Cashmere Long Fingerless Gloves ($55 at Shopbop)
Fingerless Gloves ($19.50 at the GAP)
Wool-Cashmere Fingerless Gloves ($20 on sale at JCrew)
Merino Fingerless Gloves ($25 at AnnleeDesign's shop on Etsy)
Audrey Hand Warmer ($20 at Crafts2Cherish's shop on Etsy)
Organic Wristlet/Fingerless Gloves ($24.99 at MiaJoie's Shop on Etsy)
If you are crafty, make your own with these free patterns:
Pretty Lace Handwarmers by The Purl Bee
Princess Mitts by Clara Parkes (CRAFT Pattern Podcast)
Refashioned Armwarmers by Stitch Lounge (CRAFT Pattern Podcast)