Trust me, when it comes to shoes. You'll find a pair and wear them till the soles start to fade. While we love to opt for flip-flops in this hot weather, you'd be better off putting those weary feet in a good pair of supportive, flat and closed toe shoes.
Make sure they have a soft in-sole and fit snug but not tight. Your feet will swell during the day so being able to easily slip them off and on is a real bonus. Choose a stylish pair - with a cute detail so you're always adding a splash of glamour to your casual outfits.
Also note that your feet will increase in size during pregnancy due to water retention in the legs. You will also be prone to falling and tripping due to changes in the centre of gravity and dynamics - another reason to buy flat pumps.