(c) 2009, The Washington Post copyright 2009, The Washington Post WASHINGTON -- For some political dynasty watchers, the Bush twin who just signed with NBC as a special 'Today' correspondent is the book-writing, UNICEF-promoting, Texas-bride dynamo instantly recognizable by one name only: Jenna! For those less obsessed with White House kids, it's always been, 'Uh, which one is she?' Until now, the answer was: 'The blond one.' But now Jenna Bush Hager appears to have darkened her tresses to match those of her older-by-minutes brown-haired sister, Barbara. Why, Jenna, why?!? We couldn't reach the former First Twin, but her stylist insists the change is less dramatic than it appears in recent photos. Nuri Yurt, co-owner of Georgetown's Toka Salon, says he has tried several looks with her over the past six years (including the short bob from her D.C. school-teaching days, later grown out for her May 2008 wedding to Henry Hager). Yurt says he never changes Jenna's base color -- the difference is all in the highlights. In late July they opted for a toned-down, lower-maintenance look with fewer blond strands than usual. 'Dark blond,' Yurt calls it. 'Not brunette.' Unclear whether the 27-year-old, now teaching in Baltimore, will keep the new shade when she begins contributing stories to 'Today' later this month. And really, Yurt insists: It's not about the color! Jenna herself brings 'great personality and energy' into the salon every time she visits, Yurt told our colleague Marissa Newhall. 'Blond or brunette, anything would fit with her. She can carry it perfectly.' 