He is wearing a paired of imported trousers. vs He is wearing a pair of imported trousers

Some examples from the web:

• He is wearing a fraternity shirt, so he's probably closer to college age.
• He is wearing a dress with this color.
• He is wearing a leather coat (2nd from left).
• He is wearing a peculiar crown all set with precious stones.
• He is wearing a blue sweatshirt with a hoodie.
• But he is wearing a court-ordered ankle monitor.
• The great thing is, after this competition is over, we can use his head to clean up everything because he is wearing a mop.
• He is wearing a blue gown trimmed with white fur, with gilded lilies embroidered in relief.
• If he is wearing a Weapon, the opposing characters have Attack -1.
• The victim is wearing a blue sport coat. Underneath, he is wearing a blue and white striped shirt that's been unbuttoned all the way down to his navel.
• Okay, first of all, if he is wearing a mask, That probably means he doesn't want people to know who he is.
• Our shooter is wearing a V uniform.
• Maybe he is wearing a false beard.
• Melanie is wearing a skating rink on an important finger.
• The shooter is wearing a V jacket.
• Suspect is wearing a gorilla costume.
• Miranda is wearing a blouse with shoulder pads.
• Our little Lucy is wearing a delightful mix of warm, northern comfort and southern insouciance.
• Suspect is wearing a blue police uniform.
• Mr. Hogan, we believe this man is wearing a mask.

Some examples from the web:

• In this painting, Mr. Brown is wearing a pair of horn-rimmed glasses.
• I remember you wearing a pair of them at a reception.
• They're like wearing a pair of dreams.
• There's a victim in a case that we're investigating who was wearing a shirt and a pair of jeans from here.
• I didn't see much, but I know one of them was wearing a pair of brown wingtip shoes.
• On my first date with Tyrell, I saw this stunning redhead wearing a pair of cubic zirconia earrings.
• The out of touch monarch tried to sound sincere but failed miserably, extolling the benefits of charity while wearing a pair of £10,000 bespoke Oxfords.
• I was wearing a pair of Gucci loafers that I had just purchased the weekend before.
• Think about it, you don't see the pilots wearing a pair of IEM's or supra-aural headphones.
• I am wearing a pair of Barker shoes today from a village called Earls Barton in the wonderful Westminster constituency of Daventry.
• I was wearing a pair of Gucci loafers that I had just purchased the weekend before.
• You don't want to get shot wearing a pair of those.
• Come to school wearing a pair of boots, the water, and under no...
• He is wearing a fraternity shirt, so he's probably closer to college age.
• He is wearing a dress with this color.
• He is wearing a leather coat (2nd from left).
• He is wearing a peculiar crown all set with precious stones.
• He is wearing a blue sweatshirt with a hoodie.
• She is wearing a pair of "Reeboks" athletic shoes worn because "there's almost an acre of aisles in that store, and maybe one of these days her husband will feel like walking with her."
• The first thing the gentleman at the stand showed me was the picture of Chiara Ferragni wearing a pair of Frends earmuffs.