Gisele Bundchen

Supermodel and supermom Gisele Bundchen not only has an enviable figure, but a too-good-to-be-true birth. After laboring naturally for only eight hours in a tub at home, Bundchen claims to have painlessly given birth to son Benjamin. She told Brazilian TV channel Fantasticoshe, "It didn't hurt in the slightest." Go ahead, it's OK to hate her just a little now.
Mayim Bialik

Talk about three's company. The "Big Bang Theory" star allowed her then almost 3-year-old son Miles to be present at the home birth of her second son, Frederick (sitting in a high chair and eating granola, no less). Bialik shares in a blog post, "Three pushes later, Frederick slithered out, and Miles was carried out of his highchair to cut the cord … Miles then sat down on the floor, and minutes later was handed a bundled up wide-eyed baby brother."
Unfortunately, even this intimate bonding experience couldn't prevent the ubiquitous sibling rivalry that all parents have to deal with.
Mary Lynn Rajskub

Talk about an awkward situation. The former "24" actress and her partner fired their OB after being asked to schedule a C-section—since the doctor was going on vacation around Mary Lynn's actual due date—only to be rushed to the hospital for an emergency C-section after 20 hours of labor at home and having who else, but her ex-OB be the doc on call to deliver her baby!
Amy Poehler

The funny lady recently shared on "Late Night With Seth Meyers" that the day before she was due with first son Archie, she was on the "Saturday Night Live" set and called her OB's office only to learn that he had passed away the night before! Luckily guest host Jon Hamm knew just what to do to console the distraught comedienne.
As Poehler recounted, “Jon Hamm held me by the shoulders and looked at me and said, ‘I know this is very sad, but this is a really important show for me, so I’m going to need you to get your (expletive) together.’ This made me laugh so hard, I think I peed.” Thank goodness for comic relief!
Kourtney Kardashian

Not only was then first-time mama Kourtney Kardashian not in a panic when her water broke at home, she was practically zen about it, taking the time to shower, put on makeup and even do some laundry before finally heading to the hospital, where she helped pull her son Mason out in a now unforgettable moment from the reality show.
Jessica Alba

Clearly the actress is a huge fan of hypnobirthing, having used it through her labor and deliveries of both daughters, Honor and Haven. But what's more extraordinary is the birth of youngest daughter Haven, who came out still in her amniotic sac, an extremely rare occurrence. She told OK! magazine, "[My OB] was wearing basketball shorts and a T-shirt and said: 'Oh, I have to get my scrubs on for this!' The sac burst on its own after she came out. It was a trip." This distinctive birth also inspired Haven's name, when husband Cash Warren noted that she came out into the world in her own "safe haven." Awww!
Busy Philipps

The former "Cougar Town" actress had a real hand in the delivery of daughter Birdie. After laboring with no meds and pushing until her daughter's head and shoulders were out, the doctor guided Philipps' hand to her daughter's head so she could help pull her out and onto her chest!
Tina Fey

While the delivery itself may have been fairly easy, the comedian had quite the dramatic ride to the delivery room. Tina Fey told Women's Health that en route to the hospital to deliver daughter Alice, "I ended up on all fours in the back of a taxi."