You get the dress as part of Kasumi's recruitment mission in the Kasumi Downloadable Content expansion.
You need to install the thief DLC and complete the quest. During the quest, while playing a female Shepard, you will need to wear a black silk party dress. After the mission is completed, the outfit becomes part of your selective wardrobe that you can change into in your quarters on the Normandy.
If you don't import a save game from Mass Effect, you will automatically choose the character of the opposite gender to survive. If you play Mass Effect first, though, you can choose if you want Ashley or Kaidan to survive. So to play Mass Effect 2 as a female and with Ashley alive, you would have to play Mass Effect and let Kaidan die on Virmire.
Unfortunately, you cannot. You have to make an entirely new character. However on ME2, all the Shepards you have made will be available for import.
If you played Mass Effect 1 the second game imports your old game save, so it would depend on how you played Mass Effect 1 as to whether or not Kaiden is alive. If you did not play Mass Effect 1, then the game will default to the character with the opposite gender to Shepard. So Ashley will be there with a male Shepard, Kaiden for a female one. Below is a link which has the important decisions you make in 1 and their effect in the sequel.
Yes, Mass Effect has a lesbian sex scene if you are a female avatar
Yes garanteed.
FemShep was voiced by Jennifer Hale in all three games.
If he died in Mass Effect 1 then he is not in Mass Effect 2. If he survived Mass Effect 1 he shows up in Mass Effect 2 but he can not be killed.
The effect of mass extinction is extinction, death of a mass
Yes, there will be a Mass effect 3. even if your Shepard died, there will be a mass effect 3.
it is true but its only the krogan female who can repopulate the krogan depending on your choices
mass effect 2 will be