We've been fans from the prom dresses—the original convertible bridesmaid dress—since the company launched. And now, using the introduction of the new tulle fabrication, we're officially in love. I mean, who doesn't want to twirl round the dance floor within an ultra-flattering tulle ball gown?

We'll let you know who does: The 14 Glamour staffers who volunteered to model the gown in our offices earlier this week. Sure, we prompted these phones twist and twirl—but we promise, these had fun. (Some had a lot fun they let us re-wrap them!) The dress appears in five different colors below, but it is all the same one-size-fits-all bridesmaid dress, style-wise, covered with 17 various ways. Check out all of the pretty:

Two in our models, Lindsey and Maggie, wore the optional bandeau under the gown. The other 12 were comfortable going braless, and none suffered wardrobe malfunctions.

The full-length dress retails for $340. There's also a short version for $310. Of course, that's more costly than what you'd purchase a mass-market dress, but when you (as well as your bridesmaids, obviously) love this dress, it could just be worthwhile. And if you are feeling bad asking your bridesmaids to splurge, we're a large fan of brides who purchase at least some of the friends' bridesmiad gowns.

Also, take a look at Christina's pic and Caroline's second one. The creme color could be lovely for any bride—and $340 is much more than reasonable for any mother of the groom dresses.

Click here to determine all of Twobirds' current offerings. And click here for any video how-to on tying the gown.