Pop the champagne, ladies — it's time to celebrate.

A new study is showing that a drink or two a day isn't cause for guilt — in fact, it might be cause to shop.

Women who drink between five and 30 grams of alcohol a day (about the same as three light beers or two glasses of wine, or even two shots of whiskey, depending on your preference) gain less weight and have a lower risk of obesity than women who don't drink, according to a recent report in the Archives of Internal Medicine.

Better still, researchers found an inverse relationship between alcohol consumption and subsequent weight gain. "Weight gain was largest for women who did not consume alcohol and then monotonously decreased with increasing total alcohol intake," the researchers wrote.

The researchers followed more than 19,000 women for almost 13 years, and found that the risk of becoming overweight continually declined as women drank more moderately.

Experts still caution against binging, because, you know, it's not good for you. And alcohol does, in fact, have calories.

But next time you've got a hankering for a glass of wine in the tub (or a beer in the shower, for us more recent grads) don't sweat it.

We'll toast to that.