The quirky style icon thinks the 67-year-old British actress - who is famed for her chic and minimalist look - has a striking, interesting face and believes her natural beauty shines through without make-up.
Alexa said: ''It's funny, because I get my beauty inspiration from people - not necessarily their make-up, but more about how their faces look. I realised that recently. I've always loved Charlotte Rampling's face.''
The TV presenter also revealed she is excited about the warmer weather and will be updating her summer wardrobe with cute patterned sun-dresses, but said the most important rule when going bare-legged is wearing nice underwear to avoid an embarrassing paparazzi shot.
Asked what her top tips for Spring/Summer season are, Alexa told LOOK magazine: ''Spring and summer are good because you can experiment with colour and print. And Orla Kiely do really cute summer dresses.
''But always make sure you have really nice underwear on, because in spring if you're wearing a short skirt and there's wind, an absolute nightmare can happen!''
The 29-year-old style icon also divulged her top tip for looking red carpet ready - getting her nails done with glittery polish.
Alexa admitted: ''I don't really do treatments, but I do like getting my nails done. Glitter polish is great if you have no time to top up, because when it fades it doesn't really matter. I think that looks quite cool.''