There are two versions used. The original is the cartwheel split and the alternate is cartwheel and come together hip to hip with outside arms up and inside arms around others waist. The alternate is used most of the time which I prefer as it transitions well into the "f@ck you" curtain speech that they give at the end of the show while throwing roses before the "All That Jazz" reprise.
"For me, THEATRE is an anticipation, an artistic rush, an emotional banquet, a jubilant appreciation, and an exit hopeful of clearer thought and better worlds."
~ an anonymous traveler with Robert Burns