GG5 and 中辞典 examples.

Not sure the "ik" is valid.

Meikyo: 「きらぼしの如く」と発音されることが多いが、正式には「綺羅、星の如く」。

Google N-gram Corpus Counts
╭─ーーーーーーーー─┬───────┬───────╮
│ 綺羅星のごとく　 │ 3,192 │ 38.6% │
│ きら星のごとく　 │ 1,897 │ 23.0% │
│ 綺羅星の如く　　 │ 1,578 │ 19.1% │
│ きら星の如く　　 │ 1,523 │ 18.4% │
│ きらほしのごとく │     0 │  0.0% │
│ きらぼしのごとく │    73 │  0.9% │
╰─ーーーーーーーー─┴───────┴───────╯

This is a little compositional, but I think it's worth having
since its reading isn't apparent from the reading in our entry
for 綺羅星 (which is derived from the "incorrect" pronunciation
of this expression).