She's wearing a badge, presumably employed by the store (shirt color matches poster color). To a certain generation, she would appear rather a non-starter. (Sits in unladylike manner, clutches phone, smokes, many tattoos, dull expression.) Thus, it is ironic that she appears in front of an ad for Super Starts! Best I can do on interpreting this.
You must first look profoundly into the exposed expression portrayed by the red masterpiece created with an astonishing stroke of genius and exquisitely captured in time by our truly own. Then and only then will the true "Irony" come to fruition. Simply amazing!
1.
using words to convey a meaning that is the opposite of its literal meaning; containing or exemplifying irony :
an ironic novel; an ironic remark.
2.
of, relating to, or tending to use irony or mockery; ironical.
3.
coincidental; unexpected:
It was ironic that I was seated next to my ex-husband at the dinner.
I am failing to see how this picture is ironic....