sleepy head

I definately know that I have been spoiled by my kids good sleeping habits (they come by it honestly) and esp by Lily, sleeping thru the night at 5 weeks old.  Well, this morning Lily woke up at 7:30 (I wasn't home, was walking w/ Blair) so Mike got her up.  I came home at 8 and went up and nursed her.  She went back to sleep afterwards and slept until 11AM!! (I woke her b/c I was worried!)  Lately, its not unusual for her to sleep until 10AM!  I'm totally spoiled.... maybe a growth spurt?  I'll take it!