Ao Dai, gender equality

Every Lunar new years, before college, me and my family and friends would go to the Tet festival to enjoy the festivities. One of the main attractions is Ms. Vietnam pageant. After reading Professor Valverde's "Ao Dai revival" article and browsing this year's SDTet's Ms. Vietnam contestants I'm suddenly struck by something new; this year's SDTet includes a Mr. Vietnam. Something I never noticed.I