First, ladies, it may be almost 80 degrees, but it is April. This means it's still spring, and while it is wonderfully awesome to finally wear dresses without tights, it is not quite time for full on summer sun dresses. I know you're excited. We're all excited. In 2 months, those dresses will look great. Until June, let's keep it to skirts and dresses with more seasonally appropriate prints. This is Pittsburgh, not South Beach.
Secondly, bros, unless you are running, or doing some kind of outdoor construction or landscaping work requiring heavy lifting, I fail to see why you need your shirt off. It's warm, for sure, but it's still only 80 degrees. It's not that hot. T shirts are not that stifling. And the dudes who find it necessary to walk around sans shirts, never look like Jake Gyllenhaal.
Other than that, you're all looking great. Enjoy natures way of saying, sorry for making this past winter the snowiest, coldest, most miserable 3 months of your existence. Drink beers outside, read while laying on the grass, eat Rita's water-ice. Don't forget sunscreen.