The Dancing With the Stars pros took the whole ringing in the new year literally, getting engaged just before the calendar flipped to Jan. 1, a source close to the couple confirms to E! News. Chmerkovskiy sealed the deal with a Harry Winston number.
No official comment so far from the hoofers' respective camps.
The betrothal came between DWTS tour dates in Salt Lake City and Tulsa, Okla.—and a little more than six months after Smirnoff, 30, announced she and former Dancing partner Mario Lopez had ended their two-year relationship.
She and fellow Ukraine native Chmerkovskiy, 28, hooked up shortly thereafter.
Chermkovskiy joined DWTS in season two and last season partnered with Misty May-Treanor. Smirnoff has been on since season three, most recently teaming with Rocco DiSpirito.
No word on a wedding date, but both are expected back when season eight kicks off March 9.