wordplay - Growing anagrams - What is the longest possible list forming a sentence?

This is a challenge for word-puzzle lovers. It might be a bit more of a game than a puzzle, but I think it is not limitless in it's answers, so a final answer could be found (eventually).

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Example for clarification:
Start with a word and then add words to the list with each having one additional letter to the one before. All letters may be re-arranged, i.e. all anagrams of the word are allowed.

I
in
pin ( or alternatively: nip )
pain ( or alternatively: pian )
paint (or alternatively: inapt )
...

You may add any letter, but the list is only valid if you can then put all words of it into a single, English sentence which is grammatically correct. (It does not have to be very meaningful.)
Such as in:

I paint "pin" in pain!
...says the painter while he is painting a shop-name ( "Pin & Needle" ) onto the wall while having severe backache...

So, the aim is: Find a single sentence using all (and only) the words of such a list, i.e. each word-length appears exactly once.

Rules:

• 
  
  

  Diacritics may be handled as "group" represented by their simplest form ( a, ä, á... = a ) to allow for more flexibility in the solutions.

  
  


• 
  

  The shortest word of the list may have any length. (It does not have to be a single letter.) But the list has to contain a single word for each 'length' between the shortest and the longest word.

  
  


• 
  

  You may use arbitrary punctuation in the sentence. (Compound words count as single word.)

  
  


• 
  

  Names and acronyms are allowed but if used, give a reference for their validity.

  
  
  


• 
  

  If the meaning of the sentence is not apparently clear, give a little example of where it could be appear. (See example above.)

  
  


• 
  

  All words of the list have to appear exactly once in the sentence.

  
  

Bonus:
This puzzle is about English, but if you can do the same in any other language and have a good example, please post here also. It will not be accepted as answer, though.

Answer

16 Words (Internationalize)

I
iN
Tin
tinE
ineRt
retAin
reLiant

retainAl
alienatOr
orientalIa
rationaliZe
Nationalizer
lineArization
relatInization
interNalization
intErnationalize

Sentence

I, reliant nationalizer, retain internalization; internationalize orientalia relatinization; rationalize linearization retainal; tine inert alienator in tin.

Explanation:

I (being a trustworthy nationalizer) hold on to incorporation; internationalize the process of translating into Latin those books characteristic of the Orient; justify the retention of linearization; and enclose (tine) a dormant ostracizer in metal.

I can assert with reasonable certainty that no longer chain exists (according to the dictionary that I am using to generate this). There are a huge number of variations of the chain starting with

"Internationalize",

but this one was possible to squeeze a grammatical sentence out of.