Newborn photos help!?

Kendra • Just had my twin girls on June 10th
Hi moms I need help I have my twin girls booked for pics next week and I have no clue what to put them in for pics or anything about how to pose them?! They are preemies so the only clothes I really have that fit them are sleepers. I've seen baby photos before that are so adorable and just want mine to turn out the same so any advice would be appreciated!