Pretty women wonder where my secret lies.I'm not cute or built to suit a fashion model's sizeBut when I start to tell them,They think I'm telling lies.I say,It's in the reach of my armsThe span of my hips,The stride of my step,The curl of my lips.I'm a womanPhenomenally.Phenomenal woman,That's me.

This quote is saying that the speaker is not what is considered traditionally attractive, but they are confident in their own beauty and their individual qualities and features. They talk proudly of the “reach of their arms, the span of their hips, the stride of their step, and the curl of their lips” to emphasize their femininity and confidence as a woman. Essentially, the quote explains that even though the speaker does not fit the accepted societal standards of beauty, they are still confident and self-assured in their own body and identity.