Please make Dad's aware of the temperature. A lot of Dads come during their lunch so they're dressed in work attire. Totally fine, however to avoid any overheating, It might be a good idea to have a white or gray t-shirt to change into for the photos. It gets really hot, really fast during the parent shots due to the body heat of holding the baby and my studio lights being on them. Also, a simple neutral t-shirt is a nice clean, subtle backdrop to baby as opposed to a plaid or patterned collared shirt anyways!