Sims 3:0x025ED6F4

Format

DWORD version

--if Version < 0x08 (yes, really completely different)

	DWORD
	DWORD
	DWORD

	DWORD Age
	DWORD Gender

	DWORD

	--0x0354796A - Skin Tone resource key (IGT)
		QWORD skinInstance
		DWORD skinGroup
		DWORD skinType

	--0x03555BA8- Hair Tone resource key (IGT)
		QWORD hairInstance
		DWORD hairGroup
		DWORD hairType

	DWORD
	DWORD

	BYTE caspCount
	--repeat caspCount
		--0x034AEECB - CAS Part resource key
			DWORD CASPType
			DWORD CASPGroup
			QWORD CASPInstance

		BYTE txtcPairCount
		--repeat txtcPairCount
			--0x033A1435 - Texture Compositor resource key #1
				DWORD Txtc1Type
				DWORD Txtc1Group
				QWORD Txtc1Instance
			--0x033A1435 - Texture Compositor resource key #2
				DWORD Txtc1Type
				DWORD Txtc1Group
				QWORD Txtc1Instance

		DWORD Part Type

	WORD	// Could be "byte ZERO; count of face parts in V7 format", I guess?

--else // Version >= 0x08

	DWORD // Offset (from after this DWORD) to table of resource keys
	
	--if Version >= 0x10
		// Xml Presets
		DWORD XmlPresetCount
		--repeat XmlPresetCount
			BYTE
			DWORD length
			char16[length] // xml preset

	--else if Version >= 0x09 // I am not convinced this is the same list as above but zero length XMLs...
		// List of DWORDs
		DWORD DwordCoust
		--repeat DwordCoust
			DWORD

	--if Version >= 0x0E
		DWORD
		DWORD

	FLOAT weight slider (heavy) 0 if slim, 0.0 - 1.0 for heavy
	FLOAT strength slider [0.0 - 1.0]
	FLOAT weight slider (slim) 0 if heavy, 0.0 - 1.0 for slim

	--if Version >= 0x09
		DWORD

	DWORD Age     //Age
	DWORD Gender  //Gender
	DWORD Species //Species
	
	--if Version >= 0x09
		DWORD Handedness //??Handedness??
		
	--if Version >= 0x15
		WORD // 0x0354796A - Skin Tone index
	--else
		BYTE // 0x0354796A - Skin Tone index
		
	--if Version == 0x08 // Well, < 0x09 I guess is more accurate...
		BYTE // 0x03555BA8- Hair Tone index
	
	FLOAT Skin Tone Slider

	// Now a longer conditional chunk...
	--if Version >= 0x09
		--if Version >= 0x0E
			--if Version >= 0x11
				FLOAT (male & female - muscle slider)
				--if Version >= 0x12
					FLOAT (female only - breast slider)
		
			DWORD HairBaseColor     //ARGB Color
			DWORD HairHaloHighColor //ARGB Color
			DWORD HairHaloLowColor  //ARGB Color

			--if Version >= 0x13
				FLOAT NumCurls
				FLOAT CurlPixelRadius
				--if Version >= 0x14
					--Fur Map TGI
					DWORD Type
					DWORD Group
					QWORD Instance
		
		--else // Version < 0x0E
			BYTE // You'd have thought "hair tone index" as there is one to reference but
			     // the value here is not right...

	--else // Version < 0x09
			DWORD
	
	// CAS Parts
	BYTE CASPartCount
	--repeat CASPartCount
	
		--if Version >= 0x15
			WORD index // of 0x034AEECB - CAS Part
		--else
			BYTE index // of 0x034AEECB - CAS Part
	
		--if Version >= 0x0E
			DWORD //Part Type

		BYTE TxtcPairCount
		--repeat TxtcPairCount
			--if Version >= 0x15
				WORD index // of 0x033A1435 - Texture Compositor
				WORD index // of 0x033A1435 - Texture Compositor
			--else
				BYTE index // of 0x033A1435 - Texture Compositor
				BYTE index // of 0x033A1435 - Texture Compositor

	BYTE // zero
	
	// Face Parts
	BYTE FacePartCount
	--repeat FacePartCount
		--if Version >= 0x15
			WORD index // of 0x0358B08A - Face Part
		--else
			BYTE index // of 0x0358B08A - Face Part
		FLOAT
	
	--if Version <= 0x0A
		DWORD
	
	//TGI (I64GT) list (includes resources referenced in preset xmls)
	--if Version >= 0x15
		WORD count
	--else
		BYTE count
	--repeat
		QWORD Instance
		DWORD Group
		DWORD Type

Thanks to mscsims for the Island Paradise update.