While speaking at the European premiere for Captain America: Civil War, Tom Holland admitted to an interviewer that his Spider-Man garb didn’t initially live up to his expectations:
Sadly, I have to say it was a little disappointing. My stunt double at the time was a little taller than I am, and I had to wear his suit because they didn't have one for me! So it was kind of baggy the first time I tried it on, and it wasn't as cool as I hoped!
So it seems that when Tom Holland first showed up on the set of Captain America: Civil War, the production team did not yet have a suit that properly fit him. As a result he had to put on one that had been designed for his (considerably taller) stunt double. This means that when he put the costume on for the first time it turned out to be incredibly baggy, and probably looked more like my third grade Halloween costume than a true red and blue Spider-Man outfit. Of course, the actor would go on to explain that the production team eventually sorted this issue out. While the costume didn’t initially fit him, they managed to make one that formed better to his frame, and he got to flip around the set in proper comfort and style as Peter Parker.
Just looking at this clip of Spider-Man taking on The Winter Soldier, it's plain to see that this issue didn't stick around for very long:
All things considered, it’s not the worst issue to have with a superhero outfit. We’ve reported on numerous horror stories from the sets of comic book movies before, often revolving around issues with the suits. Arguably one of the worst came in the form of Christian Bale’s constricting Batman outfit that prevented the wearer from going to the bathroom – an issue that Bale advised Ben Affleck to have rectified on the set of Batman V Superman: Dawn of Justice.
In the end it looks like the Civil War crew managed to completely nail Spider-Man’s look. We haven’t seen much of him, but Tom Holland’s iteration of the web head looks like a total badass while still remaining true to the source material. There's only one more week until Captain America: Civil War hits theaters on May 6, then we will get to take our closest look at the character yet.