In the episodes since, "Girls" has embraced this complexity, dispensing with archetype in favor of unexpected developments. Hannah, once almost pathetic, found the relationship she'd been looking for, then managed to muck it up. Marnie (Alison Williams) and Charlie (Christopher Abbott), the perfect couple, wrecked and regretted and tried to move on. Laissez-faire Jessa (comedienne extraordinaire Jemima Kirke) proved soulful, and strait-laced Shoshanna (Zosia Mamet), the series' weakest link, at least got to smoke some crack. Adam (Adam Driver), Hannah's boyfriend with the off-putting sexual predilections, made perhaps the most surprising transformation — from diffident creep to font of sweetness and encouragement.  

These were earned developments, cultivated over time rather than revealed out of nowhere, and if the wedding of Sunday's finale felt, to its discredit, more like a plot device than an organic outgrowth of the previous nine episodes, then it at least became a perfect set-piece for the mistakes and regrets that will surely imbue the second season. The episode was funny and ultimately quite sad, ending on a beach out by Coney Island with only the braying of gulls audible in the background. It was a note of introspection fitting for a series that's grown up so quickly, ugly duckling no more.

The complete first season of "Girls" is now available on iTunes and HBO GO.