Geri Halliwell-Horner revealed the real story behind her iconic Union Jack dress on this morning’s episode of The Drew Barrymore Show ... like, a ’50s swimming costume,” she said.

Read more: Outdated Trends Nicole Kidman Has Been Caught Wearing Drew Barrymore wasn't afraid of a high/low mix, as evidenced by the two thrifted slip dresses ... long scarf, or even flowers ...