I have a pair of Levis Commuter pants that I've been wearing most days since getting them for Christmas, particularly if it's wet/raining. Otherwise, it's tee shirts, thermal t's, and a wool sweater. Nothing cycle specific. I wear hiking boots when it's wet, regular running shoes if it's dry. I throw a dress shirt and a pair of dockers into my backpack or into the pannier.
I have a long commute (30 miles), and arrive as a sweaty mess. So I wear cycling kit, take a baby wipe bath in the bathroom, and change when I get to work.
Depends on whether I'm going the direct way in or on a long detour/training ride before work. Dress for your ride.
For normal commuting I just wear my regular clothes...but then I only buy clothes that will work on the bike. I do change when I get to work, but I would regardless. I don't shower, I just ride slow.
I do sometimes wear full kit, because I roll my workout into my commute home.
I ride in cycling gear. I value the comfort and durability of the cycling clothes (plus not having my office clothes all sweaty and stinky) more than I do the convenience of showing up to work already dressed and ready work. Plus, when it's 95 degrees with 85% humidity in July, riding in office clothes is NOT a pleasant experience. On top of all that, since I am a year-round commuter, I need clothes that will meet my needs in any weather conditions, and my office clothes certainly can't do that.
I wear cycling specific clothes on my 8 mile commute. When my commute was only 0.75 mile each way I wore my street clothes.
I have showers at work.
Fixed it. Here's a link to Rozik.
I ride in street clothes when commuting. For me (others are different) I feel no difference in comfort at all up to about 2 hours of riding. If my ride is going to be longer than that, I whip out the bib shorts. For short rides I think the comfort advantage of shorts is overblown. But, again, other rider's experience are different. I ride on a wonderfully broken in B-17, that may be a factor . . .
I've got the best of both worlds - I wear my work clothes in the morning. Two mile ride to the bus stop. Throw. my bike on the bus for the ride downtown. Suit up in riding gear for the 22 mile ride home. I'm not a morning person, and there are no showers at work so this is perfect.
Street clothes. Street shoes.
I only wear "cycling clothes" on long rides (more than 20 miles).
I use a Brooks saddle.
Ever since I went to Copenhagen, I completely rethought the way I ride a bike to work. If they can ride in suits and in their nice work clothes, than so can I. The only difference is I wear a helmet.
I just jump on the bike and go. I have even gone in a suite before. The key to leave early and go slow. I normally don't break 15kph outside of downhill runs. It also helps having a bicycle designed for every day use. So a full chaincase, fenders, and a coat guard are all a must for daily use.
I wear nothing I would not for a walk across the street and that's how it should be.
Gear up, or just go?
For my winter commute, I have to carefully and deliberately gear up.
My ride is 12 miles one way, and I also arrive as a sweaty mess. I do the same as some others and take a baby wipe bath and then change into work-appropriate attire. I do not have a locker or anywhere to store clothes, so I take everything with me on my rear rack.
I don't even try to wear non-cycling specific pants anymore. I've GOT to have the padding in the shorts. But I got a deal at Dick's Sporting Goods on some Nishiki 'liners,' so I can wear those under other pants. I'm not on a comfort bike of any kind. I'm on a road bike with a pretty hard saddle, so the extra padding is very necessary. I never leave without gloves either, just in case of spills, but the little bit of padding in there is nice too.
I got a couple neon yellow shirts at Wal-Mart (never thought that color would be cool again), and I wear those in the summer by themselves. I have a neon-yellow and reflective tape vest like you see on construction workers for lower-visibility days and days where I need to wear something warmer than a tee or tank. I don't bother with jerseys because I've got so much stuff to carry with me anyway, why not use the rack? It is a commute, not a race, so I'm not worried AS much about speed or wind resistance.
I don't wear special cycling gear, but I do wear a different outfit. I change once I get to work. My standard cold weather outfit is a thermal shirt and warm-up pants with some gloves and a facemask. Warm weather is just a normal t-shirt and shorts. 8 miles each way means I'm too sweaty to wear my work clothes.
Regular street clothes, slacks and shirt. In winter I add a merino base and something wind proof. If it gets really hot in the summer I wear shorts/t-shirt and switch to pants in the office. If I get off my bike, I am always dressed like anybody else (except of the stupid helmet). My commute is 7.5-11 miles depending on route.
Looking normal once I get off the bike is really important to me, because I will run errands on the way sometimes.
That said, I can wear anything on my road bike that I'd want to wear walking down the street. I've biked in everything from pantsuits to cocktail dresses... just have to not mind flashing a little leg ;)
I have a different sort of situation, I work in a grocery store and spend the majority of my day in 30-40 degree temperatures, so I have to layer clothing at work to stay warm regardless of the temperature outside. I ride to work wearing running shorts and an athletic shirt under an outer layer (shorts/pants, jacket) that varies depending on the weather, and when I arrive, I swap shoes and trade my outer layer of riding clothes for working attire.
I ride in street clothes. Just what depends on the weather, temperature, time of day and road conditions. It keeps changing.
In winter, I wear technical clothing to block wind. In summer, I wear street clothes. At work, I have an office, a full locker room, a locker and full-shower/cleaning/sleeping facilities.
bike gear for my commute (mix of road, gravel and some grass/mud depending on conditions). change in a bathroom stall at work.
i keep my work shoes in my office and just bring socks w/ my work clothes. i don't typically get too sweaty on the way in and everything hangs on a coat tree until i leave.
shell and thermal tights for winter, jersey (or wicking tshirt) with cycle shorts under nylon zip-off cargo shorts in summer. zip offs because i work in a prison and i can't wear shorts inside the fence, getting to my building.
Bike specific clothing - the only way it's going to work for me.
One can make a dutch style bike work nearly anywhere if they want to. Even fat, out of shape me has no problem with climbing hills on one.