Could an ultra high profile implant give the same upper fullness look without lift?

Higher implant profiles do not necessarily lead to more filling out of loose skin. In fact, many patients look worse when trying to use larger volume and higher profile implants instead of doing a lift. In addition, with your thin frame, ultra high profile implants may give you a very fake look to the upper poles of your breasts and your excess skin may still fall off of the implants unless you do a lift. Like most others responding here, I think a lift with a medium of high profile implant of an appropriate volume will ultimately give you a nicer result.

From your photos you have a fair amount of tissue in the lower pole of you breast. The right breast is slightly larger with more lower pole fullness. you would get a slight lift with the ultra high profile implants but it will still have an appearance of sagging breast. Your best result would be a lift with implants.

Thank you for your question.  Larger size or higher profile implants can not replicate the effects of a breast lift, and can exacerbate the amount of breast sagging that you have present.  Depending on your desired goal appearance, and cost restrictions, it may be best to perform a staged procedure with an appropriate sized implant now and a breast lift later on.  Be sure to see a board certified plastic surgeon in consultation to have the best advice recommended.