The photo shows a billboard with a picture of Monica Bellucci and the words "Genç ve Dolgun Bir Cildi Seçin (Choose a young and plump skin)." The joke is that the advertisement is making a play on words, using the word "dolgun" to refer to both "full" and "plump." It suggests that using the product will make your skin look young and plump, but it also implies that Monica Bellucci is "plump" which is a bit of an awkward suggestion. It's a humorous take on the common trope of advertising targeting youth and beauty.