The most common and most likely answer to this crossword clue is the 8 plus 5 letter word SPITTING IMAGE
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More clues leading to the result SPITTING IMAGE
- I'm just like another persona that rudely expresses hostility?
- Old show cruelly imitating ghastly politicians and egotistical stars primarily
- Double small holes? I am mature
- Sat around piano on one new game show on TV
- Double session involving piano idol
- In light rain the picture’s identical
- Ringer Enigmatist’s tormented with pig
- Twin, perhaps feeling furious over concept
- Estimating pig to be about double
- Seated to drink pint initially, this person’s time for a double
Buddy explains!

The straight part
We know that "I'm just like another" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case i'm just like another = spitting image.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.