The biggest boobs of old Britannia belong to Brenda Blethyn. Her birth name is Brenda Bottle, but there's just no way a small glass is going to contain all that wonderful chest meat. It's enough to make Big Ben ring-a-ding-ding. A player since the early '80s, most Americans who don't tune in to the BBC and obsess over Shakespearean productions didn't know about the buxom beauty until she appeared as Brad Pitt's mom in A River Runs Through It (1992). It made her name in Hollywood but didn't get Pitt running through her, which this English strumpet probably would have preferred. While never exposing the erotic expanse of her skinfulness, Brenda has gotten randy in Secrets & Lies (1996), pleasuring herself in a scene that's sure to make the earth move. It got her an Oscar nod, which may have given her the confidence to strip down to her huge bra in Little Voice (1998) and then play against full-frontal bushwhacker Emily Mortimer in Lovely & Amazing (2001). Maybe Brenda should go back to her birth name, because whatever she's got, it ought to be bottled.