Complex sentence: After she accepts the job, Meer's face is surgically altered to look similar to Lacus Clyne, making the two of them hard to tell apart; there is, however, a tell-tale sign that tells their own identities--their hairclips.
Split into simpler sentences: After she accepts the job, Meer's face is surgically altered to look similar to Lacus Clyne. There is a tell-tale sign that tells their own identities--their hairclips.