"in the wee hours"

TV Elizabeth Day interviews Louise Breakley who plays Molly on Sherlock. The opening answer speaks for itself:

"Oh God. I think I use Twitter almost like I'm talking to myself and then forget people actually read it. The party was so much fun. They don't give you any canapes. It's a trick to get you absolutely twatted. I ended up in the Groucho club in the wee hours, assaulting someone for not wanting to marry me. Today I'm feeling poorly, a bit weak. I'm drinking Lucozade."

Her Twitter avatar is a picture of Keith Moon!  Don't ever lose it Louise!