Would an alarplasty or tip plasty be enough to make my Asian nose slimmer and more defined? (Photo)

Thank you for the question and your photos. Asian rhinoplasty typically includes treatment of the dorsum (bridge) of the nose, narrowing of the tip, and decrease in the thickness or width of the alar subunits (wings of the nose). In your case, the bridge is actually in a good position. So, narrowing the tip cartilages, adding some grafts for increased projection, and reducing the alar thickness would be a great plan.

It is common for Asians to request more definition in the tip of the nose and a narrowing of the base of the nose.  In reviewing your pictures, I agree that you have great height to your dorsum.  I would not suggest further augmentation of this area.In regards to your tip, I believe some modifications to this area would help bring you nose in proportion to the face.  The width of the nostrils would benefit from a reduction or an alarplasty.  This would require incisions in the crease where the nostrils meet the cheek.In regards to your tip, I would suggest increasing the definition in this area.  This is achieved by using a multitude of techniques including:1)  Cartilage Grafting2)  Cartilage re-orientation3)  Cartilage reshapingI hope this helps. 

I think you are a good candidate for both a tip plasty and alar reduction.  I also agree with you that trying to augment the nasal bridge would not be a good idea.  It's hard to do that and get it to look natural.

Since your concern is primarily your tip, it is possible to reduce the width and bulbosity of the tip of your nose without altering the appearance of  your bridge.  The width and flare of your nostrils can be addressed as well with alar base modifcation.  The proportion of the width of the tip and the width of the nostrils is very important.  If the nostril width is reduced without reducing the width of the tip, the tip will look even more bulbous and wide in comparison. 

YES, well done alar base resection and tip rhinoplasty would produce a nice result, based on your submitted information.  Can always raise and narrow top of nose (dorsum) later if desired.