A night with 'Ella' my hot sis

On a cold, rainy night. Alex heard a light knock at his door. As usual, his sister, Ella, doing her daily routine check up. "Hey." Ella said to him. "Hi, what can I do for you tonight, sis?". He glared at her while responding. "Just checking up on my little baby brother as mom insisted, why the hostility?" Ella smirked making jest of him. "I've told you not to call me that." He replied angrily. My sister is a 20yr old slim drop dead gorgeous 5ft6" with curvy waist, a million dollar slender legs with a beautiful smile that turn heads whenever she is in public with blonde hair. She always keep her body in perfect shape by regular training and sun-tanning. By the way, I am a 18yr old hotblooded male, 6ft2" with a dirty blonde hair and a fitted body. Most importantly, I am still a virgin and about to enter college. She walked in and sat at the edge of my bed. She looked at me with pity and sighed, "I know you are an adult now and you feel like rebelling. I've been there too." "Like hell you know how I feel, I am a male and you are a female. There is a big difference in that." He glared at her again. She smiled and said, "I agree to disagree, I know you've started thinking about naked ladies, never had s*x before and not cross kissing stage with your girlfriend. Have you seen her naked? You have not right?" He was shocked and kept thinking 'how does she know'. "You are thinking how I know right?" "You..you....what... What kind of sorcery is this? Do you learn mind reading at college or did any of my friends say anything? You must be witch" Ella came closer to him , bringing her face so close to his face. She waited to get his permission before proceeding. When he didn't move, She then gave him a light kiss on his lips. "How does it feels?" "What do you mean by how does it feel, and why did you do that "But you gave me permission to", she said smiling. "When the f**k did I?" "When I wanted to kiss you. You could have stopped me but you didn't. And I took it as you permission, isn't it?" Alex stuttered, "I....I.. I.. But.. But.. But you should not.. not.. have done that". "Guess what, I will show you something that you won't forget in a hurry". She stood up before pulling off her nighties slowly under her brother's watching eyes while teasing him. Alex gulped multiple times while looking at her in her under wear. He stared at her perky breasts and her fitted ass. Ella nodded secretly, " Like what you see?" Alex nodded being unable to talk. "Do you want me to pull it all off so you can have a better look?" He stared at her for a few secs before nodding again. "Ok" she replied smiling.