The latest Time magazine cover featuring a mother breastfeeding her 3-year-old son is turning heads and sparking debate over "attachment parenting" and extended breastfeeding.

Jamie Lynne Grumet, 26, was one of four mothers photographed for the piece on the parenting approach heralded by Dr. Bill Sears in his 1992 book that recommends extended breastfeeding, co-sleeping and baby wearing. The May 21 cover asks, "Are You Mom Enough?"

It sparked immediate -- and divisive -- reactions almost immediately.

Breastfeeding advocates hailed the cover as a positive step toward encouraging more mothers to breastfeed longer, but others called it too risque and provocative and questioned the magazine's motives.

"They're trying to sell magazines, but they could have picked a cover that wasn't trying so hard to be controversial and even sexy," Jessica Wakeman, a blogger who writes about women's issues for TheFrisky.com, told Fox News.

Time managing editor Rick Stengel defended the image on MSNBC's "Morning Joe."

"I don't wince when I look at the picture," he said. "I think it's provocative. I think it's a little whimsical. I think she represents an outlier of women who are breastfeeding beyond one year. The cover is meant to get your attention. It gets your attention. I think this is a legitimate debate. It's a debate lots and lots of women are having."

Click here to watch an interview with Grumet