Clue: Drunk, one in cling uncomfortably showing effect of corsetry (11)
Answer: TIGHT-LACING
Explanation: Definition: effect of corsetry
**TIGHT** ("drunk") + **A** (one) *in* ***(cling) **[anag:*uncomfortably*] 
 
 
*Compression of the waist caused by tight clothing, according to Chambers.