As kundalini noted, the details are likely gone. I say that judging by how much clipping is happening over how much of the dress' area. The skin tones look a little over exposed as well.
As noted above, metering off the dress is a good way to start, but if you do that, make sure to either set your EV bias to around +2/3 or if in M, expose a +2/3 stop (or thereabouts; experience will let you do this more accurately in future). The meter only tells you the proper exposure to make what you're metering 18% grey; a white dress isn't grey though, it's white, so you need to make sure you interpret the meter properly and expose more when metering off such a bright object (the reverse is true with dark objects).
In any case, highlight recovery is only a stop-gap measure; a salvage effort. You can push it too far and introduce colour shift, and at best come-out with low-contrast highlights. In this case, I'd wager that the colour shift, if any, would be toward blue, given that it's outside in daylight.