2. I will buy dress number 9 because it is the sexiest.
Modern Boring Old Interesting Sexy Masculine Good Exciting Cheap Colourful Big Small Bad Expensive (Un)Comfortable Feminine Cool (In)Formal Long Loose
Sporty Skinny
(Un)Fashionable
I will buy dress number 9 because it is the sexiest.

3. The pair of jeans 1 is the cheapest.
Which pair of jeans has a very high price?
Which ones are in the extremes?
How many pairs of jeans are we comparing?
The jacket number 1 is the biggest.
How many jackets are we comparing?
Are all of the jackets´ pictures the same?
Which one is very big comparing to the others?
The sweater from French Connection is the most feminine.
Are all of the sweaters the same style?
How many sweaters are we comparing?
Which sweater is a more feminine than the others?

4. Superlatives
We use the superlative to compare one person, thing, action, event or group with another person group, etc. We use the superlative to compare somebody/ something with the whole group that he/ she/ it belongs to.
We compare 3 or more things.

5. Adjective/ adverb
-est
In (singular noun)
The
Of (plural noun)
most
Adjective/ adverb

6. Adjective
Superlative
Cold
The coldest
Hot
The hottest
Pretty
The prettiest
Beautiful
The most beautiful
Good
The best
Bad
The worst
when the word ends in consonant vowel consonant, it doubles the consonant.
When the adjective ends in y, it adds –iest.