Kristin Cavallari flashes her toned tummy while in a bra top at the gym at 6AM

Kristin Cavallari spends day with Jeff Dye in Los Angeles as she 'still considers herself single'

Kristin Cavallari and Jeff Dye Prove They're Still Going Strong Ahead of Valentine's Day

Kristin Cavallari jets out of LAX in a trench coat after restoring last name amid Jay Cutler divorce