Jennifer Lopez shared a throwback style on Friday to her Instagram, looking every bit “Jenny From the Block” with a white tank top, grey sweatpants, and Timberland-style boots from DSW. The “On the Floor” singer wore her brunette locks back in a tousled low ponytail with sexy strands falling around her face, pushing her sweatpants down and revealing her rock hard abs for the pic. “Ready for the weekend,” the 52-year-old captioned the photo, wishing everyone a “Happy Friday” in the process.