The V-shape, or any curvy or angular shape is much better. Having the fringe in clumps instead of all the way around visually breaks up the hipline, and so does having a large center motif in front and back, such as a cluster of jewels or an applique. Your upper half needs lots of attention-getting details. Those with small shoulders can wear those pretty fringed shoulder decorations without looking like they stepped out of a World War II movie starring Joan Crawford. Gauntlets with beads at the wrist will make your arms and hands more important.
Wide straps are better than a halter.
Make the bra bold with big chunky jewels and lots of fringe. Lastly, wear something sparkly on ears or hair. If your costume is properly proportioned, you will appear not pear-shaped but alluringly voluptuous. Pocket Venus, Everything I suggested above for the tall, pear-shaped dancer I would also suggest for you, with a few additions. It's even more important that you bring the most attention-getting details of your costume above hip level.