Beyond beautiful. Lillian / Liliana / Lily / Lilia / Lilah are all stunning IMO. I can never decide on my favourite but Lilianan is a very good one. However, Lili is dreadul IMO - way too confusing and the poor thing would have her name spelt incorrectly all her life. Lily is perfect though.
Liliana in my opinion sounds a bit . . . forced-frilly, like your trying to make a classic name into something trendy. I much prefer Lilian over Liliana, and Lillian over Lilian. They have more of a classic quality. I do like the NN Lili, though I think Lily might be less confusing.
It is a little too cutesy for me but I do love the spelling Lilyana. And though this combo is way too popular (and I only like the name Sophia at random times...usually I don't) LilianaSophia is nice.