Rebel Wilson is now a mother, which is a new position for her.

The actress revealed her surrogate birth of a child on Instagram on Monday morning.

The Senior Year singer shared a picture of her daughter dressed in a pink sleeper with mittens and amusing unicorn socks,

writing, "Beyond pleased to announce the arrival of my first child, Royce Lillian, born this past week.

" She's a wonderful miracle, and I can't even begin to express how much I adore her.

The announcement of the birth comes months after Wilson, 42, disclosed that she was dating Ramona Agruma.

Even though she made no mention of co-parenting, the Australian performer thanked those who made it possible.

She said, "This has been years in the making, and I am forever thankful to everyone who has been involved, (you know who you are).

" But I wanted to thank my wonderful surrogate in particular since she carried the baby and gave birth to her with such dignity and care.

I appreciate you assisting me in beginning my own family; it's a wonderful gift. The BEST present!