What you should never wear to…
Whether you work on Wall Street or Main Street the same rule applies: No wrinkled, stained or ripped clothes at work. Work dress codes vary tremendously from the classic suit and tie to jeans and a T-shirt, but either way, take the time to ensure the clothes you’re wearing are presentable.
While it may seem a bit old-fashioned, wearing white to a wedding is still a fashion faux pas. The last thing you want to do is take attention away from the bride or, worse, give the impression that you’re trying to. For men, unless the invitation is expressly black-tie, leave the tux at home or risk being mistaken for a member of the wedding party.
Funerals are a time for mourning and reflection. They are not the venue for debuting your new fashion statement. No gold lamé or bright-colored minis, please. Keep it subtle. You don’t have to dress head to toe in black (although black is classic) but darker hues are a safe bet.
A job interview
While workplace fashion has become increasingly lax over the past several decades, you still need to dress your best for an interview—regardless of the office’s day-to-day dress code. No T-shirts, tanks or anything too revealing. You don’t necessarily have to don a suit, but choose some of your smarter business wear.
Girls’ night out
Definitely go ahead and add a little spice to your outfit, but avoid anything too outrageously revealing or tight-fitting. Keep it classy. Focus on hanging out with your girls rather than trolling for guys.
If there is one appropriate place to wear tight clothing, it's hot yoga. Hot yoga, by definition, is characterized by heat, sweat and grossly compromising positions. Be kind to the people in the row behind you. Hot yoga is not the place to sport your loose fitting jersey cotton shorts (or boxers).
A bridal shower
The conventional wisdom on bridal-shower fashion is no black. While I think the younger set is decidedly moving away from associating black with mourning and grief, bridal showers are events that mingle generations. As such, don't add any unnecessary drama to the day by giving the bride's nana the impression that you somehow disapprove of the impending nuptials. Stick to protocol and pick a more cheerful shade.
The grocery store
I have the utmost respect for those who work in the medical profession. That said, hospital scrubs conjure up images of body fluids and the germs that linger among them. Before stopping at the grocery store on your way home (or on your lunch break), take time to change out of your scrubs.
A fancy restaurant
The fastest way to get pegged as a tourist (even if you're not one) is to wear sneakers, particularly those classic white numbers, to an upscale eatery. So, unless you are literally running to dinner, leave the sneakers at home.
I am a big proponent of comfort and efficiency when it comes to air travel. Do your part to help keep those TSA lines moving. Difficult-to-remove shoes, copious amounts of metal jewelry or anything else that will slow you down through security are best left at home (or packed in your luggage).