The best replacement for regine is mariah.

The best alternatives to regine are rated as following:
★★★★★  mariah
★★★★  lani
★★★  sarah
★★★  charice
★★  celine
★★  sheryn
★  siti
★  mariah carey
  lea
  sheryn regis
  angeline

Your alternative for regine is not listed? Suggest!
Speaking about regine, one probably shouldn't forget about ogie.

Other search terms related to regine and their ratings are:
★★★★★ ogie
★★ alicia keys
You have in mind a companion for regine and it is not yet here? Propose!



Google Trends

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regine
mariah
lani