“It’s not your imagination; twins are everywhere,” Liza Mundy recently wrote in a Babble essay on the dramatic increase in multiple births in the United States. Thanks to fertility treatments and other factors, two really is the new one, Mundy contends, noting, “Just because they’re far more common than they used to be, doesn’t mean twins have become any easier to deliver, or to raise.” Babble is here for you (and you and you). Click through the stories here to find 12 great tips for new parents of twins, signs that might indicate you’re pregnant with twins or more, must-have items for twinfants, as well as our picks for the best double strollers – and so much more.