I have been looking for Half Vietnamese female Victoria 4, Victoria 4.2, Genesis 2, 3 or 8 character, close in appearance to Haley Pham and Olivia Munn.  Only reason I am not wanting Genesis 8.1 or 9, is I have nearly zero clothing options.

There are enough ethnicity morphs available to create such a character.  It's blending the features to the point where they will distinctly resemble both persons, but there could be hundreds of different combinations.  As for an actual existing model, I haven't noticed any available.

Babina 8 looks facially just like Olivia Munn. Right click on bottom image and open in a new tab to see correct aspect ratio.