What's The Big Frigin' Difference?!

From "The Real Housewives of New York City" to a self-made entrepreneur ... when Bethenny Frankel steps out, you know she means business! Put down your Skinny Girl margs and see if you can bottle up the discreet changes in these two shots!

The business mogul happily strutted her stuff in the Big Apple ... heading into 'The Today Show' where she recently sat in for Jenna Bush. Wearing a bright blue romper, Ms. Frankel was up and at 'em with her bottle and bags in tow (and presumably her other essentials being rolled in).

"Commit to the Bit!"