I am 17 years old and I'm from Albania. I want to go to England to meet my cousin but I have to apply for UK visa. The problem is that my parents' bank statements are not enough and my cousin doesn't have that much money in her account. My aunt told me that she wants to sponsor my trip but can she? Can I apply for visa and say that my aunt is going to pay for my trip?
UK Immigration Rules https://www.gov.uk/guidance/immigration-rules/immigration-rules-appendix-v-visitor-rules state that:
V 4.3 A visitor’s travel, maintenance and accommodation may be provided by a third party where the decision maker is satisfied that they:
(a) have a genuine professional or personal relationship with the visitor; and
(b) are not, or will not be, in breach of UK immigration laws at the time of decision or the visitor’s entry to the UK; and
(c) can and will provide support to the visitor for the intended duration of their stay.
So yes, you can state in your application that your aunt will pay the costs of your trip. She will need to provide you with documents to prove she can fulfil the commitment eg bank statements for the last 6 months, her employment contract (if she is employed). You will also need to prove the relationship between you.
You should be aware that needing a sponsor weakens your application. If you haven’t already done so, it may help you to read UK visa refusal on V 4.2 a + c (and sometimes 'e')