Bethenny Frankel proved she truly is a SkinnyGirl when she posed for an Instagram pic in 4-year-old daughter Bryn’s Hello Kitty pajamas.

Pic! Bethenny Frankel Poses in 4-Year-Old Daughter's Pajamas

She captioned the pic, “This is my daughter's nightgown and PJ shorts. Think we're ready to start sharing clothes yet?”

The cocktail mogul and former “Real Housewife” completed the look with her own adult-sized matching slippers.