- For the suit of her Earth Two equivalent, see Killer Frost suit.
The suit includes a long dark blue coat with silver details, which reaches down to a little bit below knee length. The coat is zipped up to form a corset-like top with a snowflake-like symbol in the middle of her waist, possibly featured as an 'emblem' for the suit. It also has a dark blue dress underneath the coat and long dark blue boots that go up to her thighs.
Caitlin eventually merged with her Killer Frost side and abandoned her alter ego and her suit.
- "Shade" (vision)
- "The Once and Future Flash" (flashback)
- "I Know Who You Are"
- "Cause and Effect"
- "Infantino Street"
- "Finish Line"
- In a behind the scenes video posted on the CW's YouTube channel, the Earth One suit can be seen in the background several times.