Jennifer Lopez took up Jennifer Lawrence's mantel of tripping almightiness by snotting herself just a little when leaving the stage in her Ellie Saab dress... At least Chris Pine proved himself to be useful.

As you can see, Jlo wasn't in full on JLaw, prostrate across the stage steps, but she did look like she'd just been riding on a horse for several hours. In a word, ungainly. 
Ironically enough, Jennifer was on stage to present the award for best costume design. 

Pics: Oscars Red Carpet 2015 - the best and not so best dressed...