Looks pretty much like a one light setup through a shoot through umbrella maybe between 4 and 7 feet from the subject, mounted high on the facing down on the child. That would be my guess anyway. Big soft light.Also with a 5D Mark II, and 85mm prime lens.
Woah how do u know down to the camera and lense?
An EXIF reader is your friend:
File name: millie91.jpg
File size: 633177 bytes (3744x5616, 0.2bpp, 100x)
EXIF Summary: 1/125s f/8.0 ISO100 85mm
Camera-Specific Properties:
Equipment Make: Canon
Camera Model: Canon EOS 5D Mark II
Camera Software: Adobe Photoshop CS5 Macintosh
Maximum Lens Aperture: f/1.8
Image-Specific Properties:
Image Width: 3744
Image Height: 5616
Number of Bits Per Component: 8, 8, 8
Pixel Composition: RGB
Image Orientation: Top, Left-Hand
Horizontal Resolution: 72 dpi
Vertical Resolution: 72 dpi
Image Created: 2011:11:24 02:34:20
Exposure Time: 1/125 sec
F-Number: f/8.0
Exposure Program: Manual
ISO Speed Rating: 100
Lens Aperture: f/8.0
Exposure Bias: 0 EV
Subject Distance: 2.14 m
Metering Mode: Pattern
Flash: Flash, Compulsory
Focal Length: 85.00 mm
Color Space Information: sRGB
Image Width: 533
Image Height: 800
Rendering: Normal
Exposure Mode: Manual
White Balance: Manual
Scene Capture Type: Standard
Other Properties:
Number of Components: 3
Resolution Unit: i
Chrominance Comp Positioning: Co-Sited
Exif IFD Pointer: 308
Compression Scheme: JPEG Compression (Thumbnail)
Horizontal Resolution: 72 dpi
Vertical Resolution: 72 dpi
Resolution Unit: i
Offset to JPEG SOI: 1230
Bytes of JPEG Data: 10490
Exif Version: 2.21
Image Generated: 2011:11:18 10:46:28
Image Digitized: 2011:11:18 10:46:28
Meaning of Each Comp: Unknown
Shutter Speed: 1/128 sec
DateTime Second Fraction: 05
DateTimeOriginal Second Fraction: 05
DateTimeDigitized Second Fraction: 05
Focal Plane Horiz Resolution: 3849 dpi
Focal Plane Vert Resolution: 3908 dpi
Focal Plane Res Unit: i
GPS Info Version: 2.2.0.0