Julianne Hough, Christina Aguilera Clash at Globes Party

Christina Aguilera, Julianne Hough at the 68th Annual Golden Globe Awards in Beverley Hills, Calif., Jan. 16, 2010 (Getty Images)

NEW YORK (CBS) Drama is brewing between "Burlesque" costars Christina Aguilera and Julianne Hough.

According to E! Online, the two were involved in an angry dispute while at a pre-Golden Globes bash Friday at the SoHo House in West Hollywood, Calif.

PICTURES: Christina Aguilera
PICTURES: Golden Globes Red Carpet
PICTURES: Red Carpet Report Card
SPECIAL SECTION: Golden Globe Awards

"Christina really got in her face," an onlooker said to E!, sharing that Aguilera reportedly went off on Hough, who is dating "American Idol host Ryan Seacrest. Aguilera even grabbed at the former "Dancing with the Stars" pro, who reportedly snapped, "Don't touch me!"

"The whole thing was troubling. People felt bad for Julianne," an eyewitness said.