For those who want to see the shirt Cristiano Ronaldo actually wore in the 2nd half against ManU 6 August 2003. Take a good look at the “Ronaldo” lettering, how far away it is from the 28, and how thick the letters are.
You can see more Cristiano Ronaldo match worn shirts here: Match worn Cristiano Ronaldo Sporting shirts
Some fake CR shirts are shown here: Fake Cristiano Ronaldo shirts
And here are some good honest replica shirts: Cristiano Ronaldo Sporting Lisbon replica shirts