Birthday gift for twin sister
Get her something related to dolphins such as this adorable dolphin necklace that comes in a cute dolphin box. Or this beautiful Light Up Dolphin Sculpture Figurine she can put on her desk. Since she loves dolphins it is great gift she would enjoy very much.
A very useful gift she might love is a cute USB flash dolphin drive which she can use for school. It is so adorable she would take it with her everywhere she goes.
And also check out this 3D dolphin shape night lamp. Its fun and would make a great birthday gift for you twin sister 🙂