'Dancing with the Stars' news: Stephen 'tWitch' Boss and Allison Holker will dance in Week 7

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Fans of both "Dancing with the Stars" and "So You Think You Can Dance" know there can be a lot of crossovers between the two shows. Professional dancers, guest stars and choreographers move between the two dance competitions regularly.

Two more "SYTYCD" alums are coming to "DWTS" in the next week -- Stephen "tWitch" Boss and Allison Holker will perform together on the Tuesday (April 30) "Dancing with the Stars" results show.

The pair choreographed their own duet to the tune of one of the "DWTS" musical guests during the results show. Their number will be the Macy's Stars of Dance performance of the night, danced to the musical accompaniment of violinist Lindsey Stirling.

Hip-hop dancer tWitch Boss was the "SYTYCD" runner-up in Season 4 of the show, while Allison Holker, a contemporary dancer, made it to the Top 8 in Season 2. The two dancers have also been a couple for awhile now and got engaged in January 2013. Their "Dancing with the Stars" performance marks the first time the couple has performed together on television.

Since their time on "So You Think You Can Dance," both of these performers have kept busy. tWitch has acted in two "Step Up" movies, an episode of "Bones" and more, while Allison has worked as a backup dancer on "The X Factor" and will appear on VH1's upcoming series, "Hit the Floor."

Photo/Video credit: Getty Images