Is this jacket very fitted. According to the size guide I would be best in a small except for the waist where the medium is better but everything else (arms, bust, hip) would be too big. Can anyone suggest which way it's better to go?

Tech Specs:

Material:

[Shell] 2L Mirage Herringbone (100% polyester); [Lining] Cirrus taffeta, body-mapped fleece 

Insulation:

PrimaLoft Sport 

Waterproof:

Yes 

Core Venting:

Underarm zips 

Seam Taped:

Yes, fully 

Powder Skirt:

Yes 

Hood:

Yes, removable 

Pockets:

2 Hand, 1 pass, 1 electronics 

Recommended Use:

Skiing, snowboarding 

Manufacturer Warranty:

Lifetime